1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 code_context_menus::{CodeActionsMenu, MENU_ASIDE_MAX_WIDTH, MENU_ASIDE_MIN_WIDTH, MENU_GAP},
4 display_map::{
5 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
6 },
7 editor_settings::{
8 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
9 ScrollbarDiagnostics, ShowScrollbar,
10 },
11 git::blame::{CommitDetails, GitBlame},
12 hover_popover::{
13 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
14 },
15 hunk_diff::{diff_hunk_to_display, DisplayDiffHunk},
16 hunk_status,
17 items::BufferSearchHighlights,
18 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
19 scroll::{axis_pair, scroll_amount::ScrollAmount, AxisPair},
20 BlockId, ChunkReplacement, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
21 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
22 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
23 HalfPageUp, HandleInput, HoveredCursor, HoveredHunk, InlineCompletion, JumpData, LineDown,
24 LineUp, OpenExcerpts, PageDown, PageUp, Point, RowExt, RowRangeExt, SelectPhase, Selection,
25 SoftWrap, StickyHeaderExcerpt, ToPoint, ToggleFold, CURSORS_VISIBLE_FOR, FILE_HEADER_HEIGHT,
26 GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED, MAX_LINE_LEN, MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
27};
28use client::ParticipantIndex;
29use collections::{BTreeMap, HashMap, HashSet};
30use file_icons::FileIcons;
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::{
33 anchored, deferred, div, fill, linear_color_stop, linear_gradient, outline, point, px, quad,
34 relative, size, svg, transparent_black, Action, AnyElement, AvailableSpace, Axis, Bounds,
35 ClickEvent, ClipboardItem, ContentMask, Corner, Corners, CursorStyle, DispatchPhase, Edges,
36 Element, ElementInputHandler, Entity, FontId, GlobalElementId, Hitbox, Hsla,
37 InteractiveElement, IntoElement, Length, ModifiersChangedEvent, MouseButton, MouseDownEvent,
38 MouseMoveEvent, MouseUpEvent, PaintQuad, ParentElement, Pixels, ScrollDelta, ScrollWheelEvent,
39 ShapedLine, SharedString, Size, StatefulInteractiveElement, Style, Styled, Subscription,
40 TextRun, TextStyleRefinement, View, ViewContext, WeakView, WindowContext,
41};
42use itertools::Itertools;
43use language::{
44 language_settings::{
45 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
46 ShowWhitespaceSetting,
47 },
48 ChunkRendererContext, DiagnosticEntry,
49};
50use lsp::DiagnosticSeverity;
51use multi_buffer::{
52 Anchor, AnchorRangeExt, ExcerptId, ExcerptInfo, ExpandExcerptDirection, MultiBufferPoint,
53 MultiBufferRow, MultiBufferSnapshot, ToOffset,
54};
55use project::project_settings::{GitGutterSetting, ProjectSettings};
56use settings::Settings;
57use smallvec::{smallvec, SmallVec};
58use std::{
59 any::TypeId,
60 borrow::Cow,
61 cmp::{self, Ordering},
62 fmt::{self, Write},
63 iter, mem,
64 ops::{Deref, Range},
65 rc::Rc,
66 sync::Arc,
67};
68use sum_tree::Bias;
69use text::BufferId;
70use theme::{ActiveTheme, Appearance, PlayerColor};
71use ui::{
72 prelude::*, ButtonLike, ButtonStyle, ContextMenu, KeyBinding, Tooltip, POPOVER_Y_PADDING,
73};
74use unicode_segmentation::UnicodeSegmentation;
75use util::{RangeExt, ResultExt};
76use workspace::{item::Item, notifications::NotifyTaskExt, Workspace};
77
78struct SelectionLayout {
79 head: DisplayPoint,
80 cursor_shape: CursorShape,
81 is_newest: bool,
82 is_local: bool,
83 range: Range<DisplayPoint>,
84 active_rows: Range<DisplayRow>,
85 user_name: Option<SharedString>,
86}
87
88impl SelectionLayout {
89 fn new<T: ToPoint + ToDisplayPoint + Clone>(
90 selection: Selection<T>,
91 line_mode: bool,
92 cursor_shape: CursorShape,
93 map: &DisplaySnapshot,
94 is_newest: bool,
95 is_local: bool,
96 user_name: Option<SharedString>,
97 ) -> Self {
98 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
99 let display_selection = point_selection.map(|p| p.to_display_point(map));
100 let mut range = display_selection.range();
101 let mut head = display_selection.head();
102 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
103 ..map.next_line_boundary(point_selection.end).1.row();
104
105 // vim visual line mode
106 if line_mode {
107 let point_range = map.expand_to_line(point_selection.range());
108 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
109 }
110
111 // any vim visual mode (including line mode)
112 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
113 && !range.is_empty()
114 && !selection.reversed
115 {
116 if head.column() > 0 {
117 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
118 } else if head.row().0 > 0 && head != map.max_point() {
119 head = map.clip_point(
120 DisplayPoint::new(
121 head.row().previous_row(),
122 map.line_len(head.row().previous_row()),
123 ),
124 Bias::Left,
125 );
126 // updating range.end is a no-op unless you're cursor is
127 // on the newline containing a multi-buffer divider
128 // in which case the clip_point may have moved the head up
129 // an additional row.
130 range.end = DisplayPoint::new(head.row().next_row(), 0);
131 active_rows.end = head.row();
132 }
133 }
134
135 Self {
136 head,
137 cursor_shape,
138 is_newest,
139 is_local,
140 range,
141 active_rows,
142 user_name,
143 }
144 }
145}
146
147pub struct EditorElement {
148 editor: View<Editor>,
149 style: EditorStyle,
150}
151
152type DisplayRowDelta = u32;
153
154impl EditorElement {
155 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(15.);
156
157 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
158 Self {
159 editor: editor.clone(),
160 style,
161 }
162 }
163
164 fn register_actions(&self, cx: &mut WindowContext) {
165 let view = &self.editor;
166 view.update(cx, |editor, cx| {
167 for action in editor.editor_actions.borrow().values() {
168 (action)(cx)
169 }
170 });
171
172 crate::rust_analyzer_ext::apply_related_actions(view, cx);
173 crate::clangd_ext::apply_related_actions(view, cx);
174 register_action(view, cx, Editor::open_context_menu);
175 register_action(view, cx, Editor::move_left);
176 register_action(view, cx, Editor::move_right);
177 register_action(view, cx, Editor::move_down);
178 register_action(view, cx, Editor::move_down_by_lines);
179 register_action(view, cx, Editor::select_down_by_lines);
180 register_action(view, cx, Editor::move_up);
181 register_action(view, cx, Editor::move_up_by_lines);
182 register_action(view, cx, Editor::select_up_by_lines);
183 register_action(view, cx, Editor::select_page_down);
184 register_action(view, cx, Editor::select_page_up);
185 register_action(view, cx, Editor::cancel);
186 register_action(view, cx, Editor::newline);
187 register_action(view, cx, Editor::newline_above);
188 register_action(view, cx, Editor::newline_below);
189 register_action(view, cx, Editor::backspace);
190 register_action(view, cx, Editor::delete);
191 register_action(view, cx, Editor::tab);
192 register_action(view, cx, Editor::tab_prev);
193 register_action(view, cx, Editor::indent);
194 register_action(view, cx, Editor::outdent);
195 register_action(view, cx, Editor::autoindent);
196 register_action(view, cx, Editor::delete_line);
197 register_action(view, cx, Editor::join_lines);
198 register_action(view, cx, Editor::sort_lines_case_sensitive);
199 register_action(view, cx, Editor::sort_lines_case_insensitive);
200 register_action(view, cx, Editor::reverse_lines);
201 register_action(view, cx, Editor::shuffle_lines);
202 register_action(view, cx, Editor::convert_to_upper_case);
203 register_action(view, cx, Editor::convert_to_lower_case);
204 register_action(view, cx, Editor::convert_to_title_case);
205 register_action(view, cx, Editor::convert_to_snake_case);
206 register_action(view, cx, Editor::convert_to_kebab_case);
207 register_action(view, cx, Editor::convert_to_upper_camel_case);
208 register_action(view, cx, Editor::convert_to_lower_camel_case);
209 register_action(view, cx, Editor::convert_to_opposite_case);
210 register_action(view, cx, Editor::delete_to_previous_word_start);
211 register_action(view, cx, Editor::delete_to_previous_subword_start);
212 register_action(view, cx, Editor::delete_to_next_word_end);
213 register_action(view, cx, Editor::delete_to_next_subword_end);
214 register_action(view, cx, Editor::delete_to_beginning_of_line);
215 register_action(view, cx, Editor::delete_to_end_of_line);
216 register_action(view, cx, Editor::cut_to_end_of_line);
217 register_action(view, cx, Editor::duplicate_line_up);
218 register_action(view, cx, Editor::duplicate_line_down);
219 register_action(view, cx, Editor::duplicate_selection);
220 register_action(view, cx, Editor::move_line_up);
221 register_action(view, cx, Editor::move_line_down);
222 register_action(view, cx, Editor::transpose);
223 register_action(view, cx, Editor::rewrap);
224 register_action(view, cx, Editor::cut);
225 register_action(view, cx, Editor::kill_ring_cut);
226 register_action(view, cx, Editor::kill_ring_yank);
227 register_action(view, cx, Editor::copy);
228 register_action(view, cx, Editor::paste);
229 register_action(view, cx, Editor::undo);
230 register_action(view, cx, Editor::redo);
231 register_action(view, cx, Editor::move_page_up);
232 register_action(view, cx, Editor::move_page_down);
233 register_action(view, cx, Editor::next_screen);
234 register_action(view, cx, Editor::scroll_cursor_top);
235 register_action(view, cx, Editor::scroll_cursor_center);
236 register_action(view, cx, Editor::scroll_cursor_bottom);
237 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
238 register_action(view, cx, |editor, _: &LineDown, cx| {
239 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
240 });
241 register_action(view, cx, |editor, _: &LineUp, cx| {
242 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
243 });
244 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
245 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
246 });
247 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
248 if text.is_empty() {
249 return;
250 }
251 editor.handle_input(text, cx);
252 });
253 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
254 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
255 });
256 register_action(view, cx, |editor, _: &PageDown, cx| {
257 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
258 });
259 register_action(view, cx, |editor, _: &PageUp, cx| {
260 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
261 });
262 register_action(view, cx, Editor::move_to_previous_word_start);
263 register_action(view, cx, Editor::move_to_previous_subword_start);
264 register_action(view, cx, Editor::move_to_next_word_end);
265 register_action(view, cx, Editor::move_to_next_subword_end);
266 register_action(view, cx, Editor::move_to_beginning_of_line);
267 register_action(view, cx, Editor::move_to_end_of_line);
268 register_action(view, cx, Editor::move_to_start_of_paragraph);
269 register_action(view, cx, Editor::move_to_end_of_paragraph);
270 register_action(view, cx, Editor::move_to_beginning);
271 register_action(view, cx, Editor::move_to_end);
272 register_action(view, cx, Editor::select_up);
273 register_action(view, cx, Editor::select_down);
274 register_action(view, cx, Editor::select_left);
275 register_action(view, cx, Editor::select_right);
276 register_action(view, cx, Editor::select_to_previous_word_start);
277 register_action(view, cx, Editor::select_to_previous_subword_start);
278 register_action(view, cx, Editor::select_to_next_word_end);
279 register_action(view, cx, Editor::select_to_next_subword_end);
280 register_action(view, cx, Editor::select_to_beginning_of_line);
281 register_action(view, cx, Editor::select_to_end_of_line);
282 register_action(view, cx, Editor::select_to_start_of_paragraph);
283 register_action(view, cx, Editor::select_to_end_of_paragraph);
284 register_action(view, cx, Editor::select_to_beginning);
285 register_action(view, cx, Editor::select_to_end);
286 register_action(view, cx, Editor::select_all);
287 register_action(view, cx, |editor, action, cx| {
288 editor.select_all_matches(action, cx).log_err();
289 });
290 register_action(view, cx, Editor::select_line);
291 register_action(view, cx, Editor::split_selection_into_lines);
292 register_action(view, cx, Editor::add_selection_above);
293 register_action(view, cx, Editor::add_selection_below);
294 register_action(view, cx, |editor, action, cx| {
295 editor.select_next(action, cx).log_err();
296 });
297 register_action(view, cx, |editor, action, cx| {
298 editor.select_previous(action, cx).log_err();
299 });
300 register_action(view, cx, Editor::toggle_comments);
301 register_action(view, cx, Editor::select_larger_syntax_node);
302 register_action(view, cx, Editor::select_smaller_syntax_node);
303 register_action(view, cx, Editor::select_enclosing_symbol);
304 register_action(view, cx, Editor::move_to_enclosing_bracket);
305 register_action(view, cx, Editor::undo_selection);
306 register_action(view, cx, Editor::redo_selection);
307 if !view.read(cx).is_singleton(cx) {
308 register_action(view, cx, Editor::expand_excerpts);
309 register_action(view, cx, Editor::expand_excerpts_up);
310 register_action(view, cx, Editor::expand_excerpts_down);
311 }
312 register_action(view, cx, Editor::go_to_diagnostic);
313 register_action(view, cx, Editor::go_to_prev_diagnostic);
314 register_action(view, cx, Editor::go_to_next_hunk);
315 register_action(view, cx, Editor::go_to_prev_hunk);
316 register_action(view, cx, |editor, a, cx| {
317 editor.go_to_definition(a, cx).detach_and_notify_err(cx);
318 });
319 register_action(view, cx, |editor, a, cx| {
320 editor
321 .go_to_definition_split(a, cx)
322 .detach_and_notify_err(cx);
323 });
324 register_action(view, cx, |editor, a, cx| {
325 editor.go_to_declaration(a, cx).detach_and_notify_err(cx);
326 });
327 register_action(view, cx, |editor, a, cx| {
328 editor
329 .go_to_declaration_split(a, cx)
330 .detach_and_notify_err(cx);
331 });
332 register_action(view, cx, |editor, a, cx| {
333 editor.go_to_implementation(a, cx).detach_and_notify_err(cx);
334 });
335 register_action(view, cx, |editor, a, cx| {
336 editor
337 .go_to_implementation_split(a, cx)
338 .detach_and_notify_err(cx);
339 });
340 register_action(view, cx, |editor, a, cx| {
341 editor
342 .go_to_type_definition(a, cx)
343 .detach_and_notify_err(cx);
344 });
345 register_action(view, cx, |editor, a, cx| {
346 editor
347 .go_to_type_definition_split(a, cx)
348 .detach_and_notify_err(cx);
349 });
350 register_action(view, cx, Editor::open_url);
351 register_action(view, cx, Editor::open_selected_filename);
352 register_action(view, cx, Editor::fold);
353 register_action(view, cx, Editor::fold_at_level);
354 register_action(view, cx, Editor::fold_all);
355 register_action(view, cx, Editor::fold_function_bodies);
356 register_action(view, cx, Editor::fold_at);
357 register_action(view, cx, Editor::fold_recursive);
358 register_action(view, cx, Editor::toggle_fold);
359 register_action(view, cx, Editor::toggle_fold_recursive);
360 register_action(view, cx, Editor::unfold_lines);
361 register_action(view, cx, Editor::unfold_recursive);
362 register_action(view, cx, Editor::unfold_all);
363 register_action(view, cx, Editor::unfold_at);
364 register_action(view, cx, Editor::fold_selected_ranges);
365 register_action(view, cx, Editor::show_completions);
366 register_action(view, cx, Editor::toggle_code_actions);
367 register_action(view, cx, Editor::open_excerpts);
368 register_action(view, cx, Editor::open_excerpts_in_split);
369 register_action(view, cx, Editor::open_proposed_changes_editor);
370 register_action(view, cx, Editor::toggle_soft_wrap);
371 register_action(view, cx, Editor::toggle_tab_bar);
372 register_action(view, cx, Editor::toggle_line_numbers);
373 register_action(view, cx, Editor::toggle_relative_line_numbers);
374 register_action(view, cx, Editor::toggle_indent_guides);
375 register_action(view, cx, Editor::toggle_inlay_hints);
376 register_action(view, cx, Editor::toggle_inline_completions);
377 register_action(view, cx, hover_popover::hover);
378 register_action(view, cx, Editor::reveal_in_finder);
379 register_action(view, cx, Editor::copy_path);
380 register_action(view, cx, Editor::copy_relative_path);
381 register_action(view, cx, Editor::copy_highlight_json);
382 register_action(view, cx, Editor::copy_permalink_to_line);
383 register_action(view, cx, Editor::open_permalink_to_line);
384 register_action(view, cx, Editor::copy_file_location);
385 register_action(view, cx, Editor::toggle_git_blame);
386 register_action(view, cx, Editor::toggle_git_blame_inline);
387 register_action(view, cx, Editor::toggle_hunk_diff);
388 register_action(view, cx, Editor::expand_all_hunk_diffs);
389 register_action(view, cx, |editor, action, cx| {
390 if let Some(task) = editor.format(action, cx) {
391 task.detach_and_notify_err(cx);
392 } else {
393 cx.propagate();
394 }
395 });
396 register_action(view, cx, |editor, action, cx| {
397 if let Some(task) = editor.format_selections(action, cx) {
398 task.detach_and_notify_err(cx);
399 } else {
400 cx.propagate();
401 }
402 });
403 register_action(view, cx, Editor::restart_language_server);
404 register_action(view, cx, Editor::cancel_language_server_work);
405 register_action(view, cx, Editor::show_character_palette);
406 register_action(view, cx, |editor, action, cx| {
407 if let Some(task) = editor.confirm_completion(action, cx) {
408 task.detach_and_notify_err(cx);
409 } else {
410 cx.propagate();
411 }
412 });
413 register_action(view, cx, |editor, action, cx| {
414 if let Some(task) = editor.compose_completion(action, cx) {
415 task.detach_and_notify_err(cx);
416 } else {
417 cx.propagate();
418 }
419 });
420 register_action(view, cx, |editor, action, cx| {
421 if let Some(task) = editor.confirm_code_action(action, cx) {
422 task.detach_and_notify_err(cx);
423 } else {
424 cx.propagate();
425 }
426 });
427 register_action(view, cx, |editor, action, cx| {
428 if let Some(task) = editor.rename(action, cx) {
429 task.detach_and_notify_err(cx);
430 } else {
431 cx.propagate();
432 }
433 });
434 register_action(view, cx, |editor, action, cx| {
435 if let Some(task) = editor.confirm_rename(action, cx) {
436 task.detach_and_notify_err(cx);
437 } else {
438 cx.propagate();
439 }
440 });
441 register_action(view, cx, |editor, action, cx| {
442 if let Some(task) = editor.find_all_references(action, cx) {
443 task.detach_and_notify_err(cx);
444 } else {
445 cx.propagate();
446 }
447 });
448 register_action(view, cx, Editor::show_signature_help);
449 register_action(view, cx, Editor::next_inline_completion);
450 register_action(view, cx, Editor::previous_inline_completion);
451 register_action(view, cx, Editor::show_inline_completion);
452 register_action(view, cx, Editor::context_menu_first);
453 register_action(view, cx, Editor::context_menu_prev);
454 register_action(view, cx, Editor::context_menu_next);
455 register_action(view, cx, Editor::context_menu_last);
456 register_action(view, cx, Editor::display_cursor_names);
457 register_action(view, cx, Editor::unique_lines_case_insensitive);
458 register_action(view, cx, Editor::unique_lines_case_sensitive);
459 register_action(view, cx, Editor::accept_partial_inline_completion);
460 register_action(view, cx, Editor::accept_inline_completion);
461 register_action(view, cx, Editor::revert_file);
462 register_action(view, cx, Editor::revert_selected_hunks);
463 register_action(view, cx, Editor::apply_all_diff_hunks);
464 register_action(view, cx, Editor::apply_selected_diff_hunks);
465 register_action(view, cx, Editor::open_active_item_in_terminal);
466 register_action(view, cx, Editor::reload_file);
467 register_action(view, cx, Editor::spawn_nearest_task);
468 register_action(view, cx, Editor::insert_uuid_v4);
469 register_action(view, cx, Editor::insert_uuid_v7);
470 }
471
472 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
473 let position_map = layout.position_map.clone();
474 cx.on_key_event({
475 let editor = self.editor.clone();
476 let text_hitbox = layout.text_hitbox.clone();
477 move |event: &ModifiersChangedEvent, phase, cx| {
478 if phase != DispatchPhase::Bubble {
479 return;
480 }
481 editor.update(cx, |editor, cx| {
482 if editor.hover_state.focused(cx) {
483 return;
484 }
485 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
486 })
487 }
488 });
489 }
490
491 fn modifiers_changed(
492 editor: &mut Editor,
493 event: &ModifiersChangedEvent,
494 position_map: &PositionMap,
495 text_hitbox: &Hitbox,
496 cx: &mut ViewContext<Editor>,
497 ) {
498 let mouse_position = cx.mouse_position();
499 if !text_hitbox.is_hovered(cx) {
500 return;
501 }
502
503 editor.update_hovered_link(
504 position_map.point_for_position(text_hitbox.bounds, mouse_position),
505 &position_map.snapshot,
506 event.modifiers,
507 cx,
508 )
509 }
510
511 #[allow(clippy::too_many_arguments)]
512 fn mouse_left_down(
513 editor: &mut Editor,
514 event: &MouseDownEvent,
515 hovered_hunk: Option<HoveredHunk>,
516 position_map: &PositionMap,
517 text_hitbox: &Hitbox,
518 gutter_hitbox: &Hitbox,
519 line_numbers: &HashMap<MultiBufferRow, (ShapedLine, Option<Hitbox>)>,
520 cx: &mut ViewContext<Editor>,
521 ) {
522 if cx.default_prevented() {
523 return;
524 }
525
526 let mut click_count = event.click_count;
527 let mut modifiers = event.modifiers;
528
529 if let Some(hovered_hunk) = hovered_hunk {
530 editor.toggle_hovered_hunk(&hovered_hunk, cx);
531 cx.notify();
532 return;
533 } else if gutter_hitbox.is_hovered(cx) {
534 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
535 } else if !text_hitbox.is_hovered(cx) {
536 return;
537 }
538
539 let is_singleton = editor.buffer().read(cx).is_singleton();
540
541 if click_count == 2 && !is_singleton {
542 match EditorSettings::get_global(cx).double_click_in_multibuffer {
543 DoubleClickInMultibuffer::Select => {
544 // do nothing special on double click, all selection logic is below
545 }
546 DoubleClickInMultibuffer::Open => {
547 if modifiers.alt {
548 // if double click is made with alt, pretend it's a regular double click without opening and alt,
549 // and run the selection logic.
550 modifiers.alt = false;
551 } else {
552 // if double click is made without alt, open the corresponding excerp
553 editor.open_excerpts(&OpenExcerpts, cx);
554 return;
555 }
556 }
557 }
558 }
559
560 let point_for_position =
561 position_map.point_for_position(text_hitbox.bounds, event.position);
562 let position = point_for_position.previous_valid;
563 if modifiers.shift && modifiers.alt {
564 editor.select(
565 SelectPhase::BeginColumnar {
566 position,
567 reset: false,
568 goal_column: point_for_position.exact_unclipped.column(),
569 },
570 cx,
571 );
572 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
573 {
574 editor.select(
575 SelectPhase::Extend {
576 position,
577 click_count,
578 },
579 cx,
580 );
581 } else {
582 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
583 let multi_cursor_modifier = match multi_cursor_setting {
584 MultiCursorModifier::Alt => modifiers.alt,
585 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
586 };
587 editor.select(
588 SelectPhase::Begin {
589 position,
590 add: multi_cursor_modifier,
591 click_count,
592 },
593 cx,
594 );
595 }
596 cx.stop_propagation();
597
598 if !is_singleton {
599 let display_row = (((event.position - gutter_hitbox.bounds.origin).y
600 + position_map.scroll_pixel_position.y)
601 / position_map.line_height) as u32;
602 let multi_buffer_row = position_map
603 .snapshot
604 .display_point_to_point(DisplayPoint::new(DisplayRow(display_row), 0), Bias::Right)
605 .row;
606 if let Some((_, Some(hitbox))) = line_numbers.get(&MultiBufferRow(multi_buffer_row)) {
607 if hitbox.contains(&event.position) {
608 let scroll_position_row =
609 position_map.scroll_pixel_position.y / position_map.line_height;
610 let line_offset_from_top = display_row - scroll_position_row as u32;
611
612 editor.open_excerpts_common(
613 Some(JumpData::MultiBufferRow {
614 row: MultiBufferRow(multi_buffer_row),
615 line_offset_from_top,
616 }),
617 modifiers.alt,
618 cx,
619 );
620 cx.stop_propagation();
621 }
622 }
623 }
624 }
625
626 fn mouse_right_down(
627 editor: &mut Editor,
628 event: &MouseDownEvent,
629 position_map: &PositionMap,
630 text_hitbox: &Hitbox,
631 cx: &mut ViewContext<Editor>,
632 ) {
633 if !text_hitbox.is_hovered(cx) {
634 return;
635 }
636 let point_for_position =
637 position_map.point_for_position(text_hitbox.bounds, event.position);
638 mouse_context_menu::deploy_context_menu(
639 editor,
640 Some(event.position),
641 point_for_position.previous_valid,
642 cx,
643 );
644 cx.stop_propagation();
645 }
646
647 fn mouse_middle_down(
648 editor: &mut Editor,
649 event: &MouseDownEvent,
650 position_map: &PositionMap,
651 text_hitbox: &Hitbox,
652 cx: &mut ViewContext<Editor>,
653 ) {
654 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
655 return;
656 }
657
658 let point_for_position =
659 position_map.point_for_position(text_hitbox.bounds, event.position);
660 let position = point_for_position.previous_valid;
661
662 editor.select(
663 SelectPhase::BeginColumnar {
664 position,
665 reset: true,
666 goal_column: point_for_position.exact_unclipped.column(),
667 },
668 cx,
669 );
670 }
671
672 fn mouse_up(
673 editor: &mut Editor,
674 event: &MouseUpEvent,
675 position_map: &PositionMap,
676 text_hitbox: &Hitbox,
677 cx: &mut ViewContext<Editor>,
678 ) {
679 let end_selection = editor.has_pending_selection();
680 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
681
682 if end_selection {
683 editor.select(SelectPhase::End, cx);
684 }
685
686 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
687 let multi_cursor_modifier = match multi_cursor_setting {
688 MultiCursorModifier::Alt => event.modifiers.secondary(),
689 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
690 };
691
692 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
693 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
694 editor.handle_click_hovered_link(point, event.modifiers, cx);
695
696 cx.stop_propagation();
697 } else if end_selection && pending_nonempty_selections {
698 cx.stop_propagation();
699 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
700 && event.button == MouseButton::Middle
701 {
702 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
703 return;
704 }
705
706 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
707 if EditorSettings::get_global(cx).middle_click_paste {
708 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
709 let point_for_position =
710 position_map.point_for_position(text_hitbox.bounds, event.position);
711 let position = point_for_position.previous_valid;
712
713 editor.select(
714 SelectPhase::Begin {
715 position,
716 add: false,
717 click_count: 1,
718 },
719 cx,
720 );
721 editor.insert(&text, cx);
722 }
723 cx.stop_propagation()
724 }
725 }
726 }
727
728 fn mouse_dragged(
729 editor: &mut Editor,
730 event: &MouseMoveEvent,
731 position_map: &PositionMap,
732 text_bounds: Bounds<Pixels>,
733 cx: &mut ViewContext<Editor>,
734 ) {
735 if !editor.has_pending_selection() {
736 return;
737 }
738
739 let point_for_position = position_map.point_for_position(text_bounds, event.position);
740 let mut scroll_delta = gpui::Point::<f32>::default();
741 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
742 let top = text_bounds.origin.y + vertical_margin;
743 let bottom = text_bounds.bottom_left().y - vertical_margin;
744 if event.position.y < top {
745 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
746 }
747 if event.position.y > bottom {
748 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
749 }
750
751 // We need horizontal width of text
752 let style = editor.style.clone().unwrap_or_default();
753 let font_id = cx.text_system().resolve_font(&style.text.font());
754 let font_size = style.text.font_size.to_pixels(cx.rem_size());
755 let em_width = cx
756 .text_system()
757 .typographic_bounds(font_id, font_size, 'm')
758 .unwrap()
759 .size
760 .width;
761
762 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
763
764 let scroll_space: Pixels = scroll_margin_x * em_width;
765
766 let left = text_bounds.origin.x + scroll_space;
767 let right = text_bounds.top_right().x - scroll_space;
768
769 if event.position.x < left {
770 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
771 }
772 if event.position.x > right {
773 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
774 }
775
776 editor.select(
777 SelectPhase::Update {
778 position: point_for_position.previous_valid,
779 goal_column: point_for_position.exact_unclipped.column(),
780 scroll_delta,
781 },
782 cx,
783 );
784 }
785
786 fn mouse_moved(
787 editor: &mut Editor,
788 event: &MouseMoveEvent,
789 position_map: &PositionMap,
790 text_hitbox: &Hitbox,
791 gutter_hitbox: &Hitbox,
792 cx: &mut ViewContext<Editor>,
793 ) {
794 let modifiers = event.modifiers;
795 let gutter_hovered = gutter_hitbox.is_hovered(cx);
796 editor.set_gutter_hovered(gutter_hovered, cx);
797
798 // Don't trigger hover popover if mouse is hovering over context menu
799 if text_hitbox.is_hovered(cx) {
800 let point_for_position =
801 position_map.point_for_position(text_hitbox.bounds, event.position);
802
803 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
804
805 if let Some(point) = point_for_position.as_valid() {
806 let anchor = position_map
807 .snapshot
808 .buffer_snapshot
809 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
810 hover_at(editor, Some(anchor), cx);
811 Self::update_visible_cursor(editor, point, position_map, cx);
812 } else {
813 hover_at(editor, None, cx);
814 }
815 } else {
816 editor.hide_hovered_link(cx);
817 hover_at(editor, None, cx);
818 if gutter_hovered {
819 cx.stop_propagation();
820 }
821 }
822 }
823
824 fn update_visible_cursor(
825 editor: &mut Editor,
826 point: DisplayPoint,
827 position_map: &PositionMap,
828 cx: &mut ViewContext<Editor>,
829 ) {
830 let snapshot = &position_map.snapshot;
831 let Some(hub) = editor.collaboration_hub() else {
832 return;
833 };
834 let start = snapshot.display_snapshot.clip_point(
835 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
836 Bias::Left,
837 );
838 let end = snapshot.display_snapshot.clip_point(
839 DisplayPoint::new(
840 point.row(),
841 (point.column() + 1).min(snapshot.line_len(point.row())),
842 ),
843 Bias::Right,
844 );
845
846 let range = snapshot
847 .buffer_snapshot
848 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
849 ..snapshot
850 .buffer_snapshot
851 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
852
853 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
854 return;
855 };
856 let key = crate::HoveredCursor {
857 replica_id: selection.replica_id,
858 selection_id: selection.selection.id,
859 };
860 editor.hovered_cursors.insert(
861 key.clone(),
862 cx.spawn(|editor, mut cx| async move {
863 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
864 editor
865 .update(&mut cx, |editor, cx| {
866 editor.hovered_cursors.remove(&key);
867 cx.notify();
868 })
869 .ok();
870 }),
871 );
872 cx.notify()
873 }
874
875 #[allow(clippy::too_many_arguments)]
876 fn layout_selections(
877 &self,
878 start_anchor: Anchor,
879 end_anchor: Anchor,
880 local_selections: &[Selection<Point>],
881 snapshot: &EditorSnapshot,
882 start_row: DisplayRow,
883 end_row: DisplayRow,
884 cx: &mut WindowContext,
885 ) -> (
886 Vec<(PlayerColor, Vec<SelectionLayout>)>,
887 BTreeMap<DisplayRow, bool>,
888 Option<DisplayPoint>,
889 ) {
890 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
891 let mut active_rows = BTreeMap::new();
892 let mut newest_selection_head = None;
893 self.editor.update(cx, |editor, cx| {
894 if editor.show_local_selections {
895 let mut layouts = Vec::new();
896 let newest = editor.selections.newest(cx);
897 for selection in local_selections.iter().cloned() {
898 let is_empty = selection.start == selection.end;
899 let is_newest = selection == newest;
900
901 let layout = SelectionLayout::new(
902 selection,
903 editor.selections.line_mode,
904 editor.cursor_shape,
905 &snapshot.display_snapshot,
906 is_newest,
907 editor.leader_peer_id.is_none(),
908 None,
909 );
910 if is_newest {
911 newest_selection_head = Some(layout.head);
912 }
913
914 for row in cmp::max(layout.active_rows.start.0, start_row.0)
915 ..=cmp::min(layout.active_rows.end.0, end_row.0)
916 {
917 let contains_non_empty_selection =
918 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
919 *contains_non_empty_selection |= !is_empty;
920 }
921 layouts.push(layout);
922 }
923
924 let player = if editor.read_only(cx) {
925 cx.theme().players().read_only()
926 } else {
927 self.style.local_player
928 };
929
930 selections.push((player, layouts));
931 }
932
933 if let Some(collaboration_hub) = &editor.collaboration_hub {
934 // When following someone, render the local selections in their color.
935 if let Some(leader_id) = editor.leader_peer_id {
936 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
937 {
938 if let Some(participant_index) = collaboration_hub
939 .user_participant_indices(cx)
940 .get(&collaborator.user_id)
941 {
942 if let Some((local_selection_style, _)) = selections.first_mut() {
943 *local_selection_style = cx
944 .theme()
945 .players()
946 .color_for_participant(participant_index.0);
947 }
948 }
949 }
950 }
951
952 let mut remote_selections = HashMap::default();
953 for selection in snapshot.remote_selections_in_range(
954 &(start_anchor..end_anchor),
955 collaboration_hub.as_ref(),
956 cx,
957 ) {
958 let selection_style =
959 Self::get_participant_color(selection.participant_index, cx);
960
961 // Don't re-render the leader's selections, since the local selections
962 // match theirs.
963 if Some(selection.peer_id) == editor.leader_peer_id {
964 continue;
965 }
966 let key = HoveredCursor {
967 replica_id: selection.replica_id,
968 selection_id: selection.selection.id,
969 };
970
971 let is_shown =
972 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
973
974 remote_selections
975 .entry(selection.replica_id)
976 .or_insert((selection_style, Vec::new()))
977 .1
978 .push(SelectionLayout::new(
979 selection.selection,
980 selection.line_mode,
981 selection.cursor_shape,
982 &snapshot.display_snapshot,
983 false,
984 false,
985 if is_shown { selection.user_name } else { None },
986 ));
987 }
988
989 selections.extend(remote_selections.into_values());
990 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
991 let player = if editor.read_only(cx) {
992 cx.theme().players().read_only()
993 } else {
994 self.style.local_player
995 };
996 let layouts = snapshot
997 .buffer_snapshot
998 .selections_in_range(&(start_anchor..end_anchor), true)
999 .map(move |(_, line_mode, cursor_shape, selection)| {
1000 SelectionLayout::new(
1001 selection,
1002 line_mode,
1003 cursor_shape,
1004 &snapshot.display_snapshot,
1005 false,
1006 false,
1007 None,
1008 )
1009 })
1010 .collect::<Vec<_>>();
1011 selections.push((player, layouts));
1012 }
1013 });
1014 (selections, active_rows, newest_selection_head)
1015 }
1016
1017 fn collect_cursors(
1018 &self,
1019 snapshot: &EditorSnapshot,
1020 cx: &mut WindowContext,
1021 ) -> Vec<(DisplayPoint, Hsla)> {
1022 let editor = self.editor.read(cx);
1023 let mut cursors = Vec::new();
1024 let mut skip_local = false;
1025 let mut add_cursor = |anchor: Anchor, color| {
1026 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
1027 };
1028 // Remote cursors
1029 if let Some(collaboration_hub) = &editor.collaboration_hub {
1030 for remote_selection in snapshot.remote_selections_in_range(
1031 &(Anchor::min()..Anchor::max()),
1032 collaboration_hub.deref(),
1033 cx,
1034 ) {
1035 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1036 add_cursor(remote_selection.selection.head(), color.cursor);
1037 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1038 skip_local = true;
1039 }
1040 }
1041 }
1042 // Local cursors
1043 if !skip_local {
1044 let color = cx.theme().players().local().cursor;
1045 editor.selections.disjoint.iter().for_each(|selection| {
1046 add_cursor(selection.head(), color);
1047 });
1048 if let Some(ref selection) = editor.selections.pending_anchor() {
1049 add_cursor(selection.head(), color);
1050 }
1051 }
1052 cursors
1053 }
1054
1055 #[allow(clippy::too_many_arguments)]
1056 fn layout_visible_cursors(
1057 &self,
1058 snapshot: &EditorSnapshot,
1059 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1060 block_start_rows: &HashSet<DisplayRow>,
1061 visible_display_row_range: Range<DisplayRow>,
1062 line_layouts: &[LineWithInvisibles],
1063 text_hitbox: &Hitbox,
1064 content_origin: gpui::Point<Pixels>,
1065 scroll_position: gpui::Point<f32>,
1066 scroll_pixel_position: gpui::Point<Pixels>,
1067 line_height: Pixels,
1068 em_width: Pixels,
1069 em_advance: Pixels,
1070 autoscroll_containing_element: bool,
1071 cx: &mut WindowContext,
1072 ) -> Vec<CursorLayout> {
1073 let mut autoscroll_bounds = None;
1074 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1075 let mut cursors = Vec::new();
1076 for (player_color, selections) in selections {
1077 for selection in selections {
1078 let cursor_position = selection.head;
1079
1080 let in_range = visible_display_row_range.contains(&cursor_position.row());
1081 if (selection.is_local && !editor.show_local_cursors(cx))
1082 || !in_range
1083 || block_start_rows.contains(&cursor_position.row())
1084 {
1085 continue;
1086 }
1087
1088 let cursor_row_layout = &line_layouts
1089 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1090 let cursor_column = cursor_position.column() as usize;
1091
1092 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1093 let mut block_width =
1094 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1095 if block_width == Pixels::ZERO {
1096 block_width = em_advance;
1097 }
1098 let block_text = if let CursorShape::Block = selection.cursor_shape {
1099 snapshot
1100 .grapheme_at(cursor_position)
1101 .or_else(|| {
1102 if cursor_column == 0 {
1103 snapshot.placeholder_text().and_then(|s| {
1104 s.graphemes(true).next().map(|s| s.to_string().into())
1105 })
1106 } else {
1107 None
1108 }
1109 })
1110 .and_then(|text| {
1111 let len = text.len();
1112
1113 let font = cursor_row_layout
1114 .font_id_for_index(cursor_column)
1115 .and_then(|cursor_font_id| {
1116 cx.text_system().get_font_for_id(cursor_font_id)
1117 })
1118 .unwrap_or(self.style.text.font());
1119
1120 // Invert the text color for the block cursor. Ensure that the text
1121 // color is opaque enough to be visible against the background color.
1122 //
1123 // 0.75 is an arbitrary threshold to determine if the background color is
1124 // opaque enough to use as a text color.
1125 //
1126 // TODO: In the future we should ensure themes have a `text_inverse` color.
1127 let color = if cx.theme().colors().editor_background.a < 0.75 {
1128 match cx.theme().appearance {
1129 Appearance::Dark => Hsla::black(),
1130 Appearance::Light => Hsla::white(),
1131 }
1132 } else {
1133 cx.theme().colors().editor_background
1134 };
1135
1136 cx.text_system()
1137 .shape_line(
1138 text,
1139 cursor_row_layout.font_size,
1140 &[TextRun {
1141 len,
1142 font,
1143 color,
1144 background_color: None,
1145 strikethrough: None,
1146 underline: None,
1147 }],
1148 )
1149 .log_err()
1150 })
1151 } else {
1152 None
1153 };
1154
1155 let x = cursor_character_x - scroll_pixel_position.x;
1156 let y = (cursor_position.row().as_f32()
1157 - scroll_pixel_position.y / line_height)
1158 * line_height;
1159 if selection.is_newest {
1160 editor.pixel_position_of_newest_cursor = Some(point(
1161 text_hitbox.origin.x + x + block_width / 2.,
1162 text_hitbox.origin.y + y + line_height / 2.,
1163 ));
1164
1165 if autoscroll_containing_element {
1166 let top = text_hitbox.origin.y
1167 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1168 * line_height;
1169 let left = text_hitbox.origin.x
1170 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1171 .max(0.)
1172 * em_width;
1173
1174 let bottom = text_hitbox.origin.y
1175 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1176 * line_height;
1177 let right = text_hitbox.origin.x
1178 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1179 * em_width;
1180
1181 autoscroll_bounds =
1182 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1183 }
1184 }
1185
1186 let mut cursor = CursorLayout {
1187 color: player_color.cursor,
1188 block_width,
1189 origin: point(x, y),
1190 line_height,
1191 shape: selection.cursor_shape,
1192 block_text,
1193 cursor_name: None,
1194 };
1195 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1196 string: name,
1197 color: self.style.background,
1198 is_top_row: cursor_position.row().0 == 0,
1199 });
1200 cursor.layout(content_origin, cursor_name, cx);
1201 cursors.push(cursor);
1202 }
1203 }
1204 cursors
1205 });
1206
1207 if let Some(bounds) = autoscroll_bounds {
1208 cx.request_autoscroll(bounds);
1209 }
1210
1211 cursor_layouts
1212 }
1213
1214 fn layout_scrollbars(
1215 &self,
1216 snapshot: &EditorSnapshot,
1217 scrollbar_range_data: ScrollbarRangeData,
1218 scroll_position: gpui::Point<f32>,
1219 non_visible_cursors: bool,
1220 cx: &mut WindowContext,
1221 ) -> AxisPair<Option<ScrollbarLayout>> {
1222 let letter_size = scrollbar_range_data.letter_size;
1223 let text_units_per_page = axis_pair(
1224 scrollbar_range_data.scrollbar_bounds.size.width / letter_size.width,
1225 scrollbar_range_data.scrollbar_bounds.size.height / letter_size.height,
1226 );
1227
1228 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1229 let show_scrollbars = self.editor.read(cx).show_scrollbars
1230 && match scrollbar_settings.show {
1231 ShowScrollbar::Auto => {
1232 let editor = self.editor.read(cx);
1233 let is_singleton = editor.is_singleton(cx);
1234 // Git
1235 (is_singleton && scrollbar_settings.git_diff && !snapshot.diff_map.is_empty())
1236 ||
1237 // Buffer Search Results
1238 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1239 ||
1240 // Selected Symbol Occurrences
1241 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1242 ||
1243 // Diagnostics
1244 (is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics())
1245 ||
1246 // Cursors out of sight
1247 non_visible_cursors
1248 ||
1249 // Scrollmanager
1250 editor.scroll_manager.scrollbars_visible()
1251 }
1252 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1253 ShowScrollbar::Always => true,
1254 ShowScrollbar::Never => false,
1255 };
1256
1257 let axes: AxisPair<bool> = scrollbar_settings.axes.into();
1258
1259 if snapshot.mode != EditorMode::Full {
1260 return axis_pair(None, None);
1261 }
1262
1263 let visible_range = axis_pair(
1264 axes.horizontal
1265 .then(|| scroll_position.x..scroll_position.x + text_units_per_page.horizontal),
1266 axes.vertical
1267 .then(|| scroll_position.y..scroll_position.y + text_units_per_page.vertical),
1268 );
1269
1270 // If a drag took place after we started dragging the scrollbar,
1271 // cancel the scrollbar drag.
1272 if cx.has_active_drag() {
1273 self.editor.update(cx, |editor, cx| {
1274 editor
1275 .scroll_manager
1276 .set_is_dragging_scrollbar(Axis::Horizontal, false, cx);
1277 editor
1278 .scroll_manager
1279 .set_is_dragging_scrollbar(Axis::Vertical, false, cx);
1280 });
1281 }
1282
1283 let text_bounds = scrollbar_range_data.scrollbar_bounds;
1284
1285 let track_bounds = axis_pair(
1286 axes.horizontal.then(|| {
1287 Bounds::from_corners(
1288 point(
1289 text_bounds.bottom_left().x,
1290 text_bounds.bottom_left().y - self.style.scrollbar_width,
1291 ),
1292 point(
1293 text_bounds.bottom_right().x
1294 - if axes.vertical {
1295 self.style.scrollbar_width
1296 } else {
1297 px(0.)
1298 },
1299 text_bounds.bottom_right().y,
1300 ),
1301 )
1302 }),
1303 axes.vertical.then(|| {
1304 Bounds::from_corners(
1305 point(self.scrollbar_left(&text_bounds), text_bounds.origin.y),
1306 text_bounds.bottom_right(),
1307 )
1308 }),
1309 );
1310
1311 let scroll_range_size = scrollbar_range_data.scroll_range.size;
1312 let total_text_units = axis_pair(
1313 Some(scroll_range_size.width / letter_size.width),
1314 Some(scroll_range_size.height / letter_size.height),
1315 );
1316
1317 let thumb_size = axis_pair(
1318 total_text_units
1319 .horizontal
1320 .zip(track_bounds.horizontal)
1321 .map(|(total_text_units_x, track_bounds_x)| {
1322 let thumb_percent =
1323 (text_units_per_page.horizontal / total_text_units_x).min(1.);
1324
1325 track_bounds_x.size.width * thumb_percent
1326 }),
1327 total_text_units.vertical.zip(track_bounds.vertical).map(
1328 |(total_text_units_y, track_bounds_y)| {
1329 let thumb_percent = (text_units_per_page.vertical / total_text_units_y).min(1.);
1330
1331 track_bounds_y.size.height * thumb_percent
1332 },
1333 ),
1334 );
1335
1336 // NOTE: Space not taken by track bounds divided by text units not on screen
1337 let text_unit_size = axis_pair(
1338 thumb_size
1339 .horizontal
1340 .zip(track_bounds.horizontal)
1341 .zip(total_text_units.horizontal)
1342 .map(|((thumb_size, track_bounds), total_text_units)| {
1343 (track_bounds.size.width - thumb_size)
1344 / (total_text_units - text_units_per_page.horizontal).max(0.)
1345 }),
1346 thumb_size
1347 .vertical
1348 .zip(track_bounds.vertical)
1349 .zip(total_text_units.vertical)
1350 .map(|((thumb_size, track_bounds), total_text_units)| {
1351 (track_bounds.size.height - thumb_size)
1352 / (total_text_units - text_units_per_page.vertical).max(0.)
1353 }),
1354 );
1355
1356 let horizontal_scrollbar = track_bounds
1357 .horizontal
1358 .zip(visible_range.horizontal)
1359 .zip(text_unit_size.horizontal)
1360 .zip(thumb_size.horizontal)
1361 .map(
1362 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1363 hitbox: cx.insert_hitbox(track_bounds, false),
1364 visible_range,
1365 text_unit_size,
1366 visible: show_scrollbars,
1367 thumb_size,
1368 axis: Axis::Horizontal,
1369 },
1370 );
1371
1372 let vertical_scrollbar = track_bounds
1373 .vertical
1374 .zip(visible_range.vertical)
1375 .zip(text_unit_size.vertical)
1376 .zip(thumb_size.vertical)
1377 .map(
1378 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1379 hitbox: cx.insert_hitbox(track_bounds, false),
1380 visible_range,
1381 text_unit_size,
1382 visible: show_scrollbars,
1383 thumb_size,
1384 axis: Axis::Vertical,
1385 },
1386 );
1387
1388 axis_pair(horizontal_scrollbar, vertical_scrollbar)
1389 }
1390
1391 #[allow(clippy::too_many_arguments)]
1392 fn prepaint_crease_toggles(
1393 &self,
1394 crease_toggles: &mut [Option<AnyElement>],
1395 line_height: Pixels,
1396 gutter_dimensions: &GutterDimensions,
1397 gutter_settings: crate::editor_settings::Gutter,
1398 scroll_pixel_position: gpui::Point<Pixels>,
1399 gutter_hitbox: &Hitbox,
1400 cx: &mut WindowContext,
1401 ) {
1402 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1403 if let Some(crease_toggle) = crease_toggle {
1404 debug_assert!(gutter_settings.folds);
1405 let available_space = size(
1406 AvailableSpace::MinContent,
1407 AvailableSpace::Definite(line_height * 0.55),
1408 );
1409 let crease_toggle_size = crease_toggle.layout_as_root(available_space, cx);
1410
1411 let position = point(
1412 gutter_dimensions.width - gutter_dimensions.right_padding,
1413 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1414 );
1415 let centering_offset = point(
1416 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1417 (line_height - crease_toggle_size.height) / 2.,
1418 );
1419 let origin = gutter_hitbox.origin + position + centering_offset;
1420 crease_toggle.prepaint_as_root(origin, available_space, cx);
1421 }
1422 }
1423 }
1424
1425 #[allow(clippy::too_many_arguments)]
1426 fn prepaint_crease_trailers(
1427 &self,
1428 trailers: Vec<Option<AnyElement>>,
1429 lines: &[LineWithInvisibles],
1430 line_height: Pixels,
1431 content_origin: gpui::Point<Pixels>,
1432 scroll_pixel_position: gpui::Point<Pixels>,
1433 em_width: Pixels,
1434 cx: &mut WindowContext,
1435 ) -> Vec<Option<CreaseTrailerLayout>> {
1436 trailers
1437 .into_iter()
1438 .enumerate()
1439 .map(|(ix, element)| {
1440 let mut element = element?;
1441 let available_space = size(
1442 AvailableSpace::MinContent,
1443 AvailableSpace::Definite(line_height),
1444 );
1445 let size = element.layout_as_root(available_space, cx);
1446
1447 let line = &lines[ix];
1448 let padding = if line.width == Pixels::ZERO {
1449 Pixels::ZERO
1450 } else {
1451 4. * em_width
1452 };
1453 let position = point(
1454 scroll_pixel_position.x + line.width + padding,
1455 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1456 );
1457 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1458 let origin = content_origin + position + centering_offset;
1459 element.prepaint_as_root(origin, available_space, cx);
1460 Some(CreaseTrailerLayout {
1461 element,
1462 bounds: Bounds::new(origin, size),
1463 })
1464 })
1465 .collect()
1466 }
1467
1468 // Folds contained in a hunk are ignored apart from shrinking visual size
1469 // If a fold contains any hunks then that fold line is marked as modified
1470 fn layout_gutter_git_hunks(
1471 &self,
1472 line_height: Pixels,
1473 gutter_hitbox: &Hitbox,
1474 display_rows: Range<DisplayRow>,
1475 anchor_range: Range<Anchor>,
1476 snapshot: &EditorSnapshot,
1477 cx: &mut WindowContext,
1478 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1479 let buffer_snapshot = &snapshot.buffer_snapshot;
1480 let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(snapshot);
1481 let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(snapshot);
1482
1483 let git_gutter_setting = ProjectSettings::get_global(cx)
1484 .git
1485 .git_gutter
1486 .unwrap_or_default();
1487
1488 self.editor.update(cx, |editor, cx| {
1489 let expanded_hunks = &editor.diff_map.hunks;
1490 let expanded_hunks_start_ix = expanded_hunks
1491 .binary_search_by(|hunk| {
1492 hunk.hunk_range
1493 .end
1494 .cmp(&anchor_range.start, &buffer_snapshot)
1495 .then(Ordering::Less)
1496 })
1497 .unwrap_err();
1498 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1499
1500 let mut display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)> = editor
1501 .diff_map
1502 .snapshot
1503 .diff_hunks_in_range(buffer_start..buffer_end, &buffer_snapshot)
1504 .filter_map(|hunk| {
1505 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1506
1507 if let DisplayDiffHunk::Unfolded {
1508 multi_buffer_range,
1509 status,
1510 ..
1511 } = &display_hunk
1512 {
1513 let mut is_expanded = false;
1514 while let Some(expanded_hunk) = expanded_hunks.peek() {
1515 match expanded_hunk
1516 .hunk_range
1517 .start
1518 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1519 {
1520 Ordering::Less => {
1521 expanded_hunks.next();
1522 }
1523 Ordering::Equal => {
1524 is_expanded = true;
1525 break;
1526 }
1527 Ordering::Greater => {
1528 break;
1529 }
1530 }
1531 }
1532 match status {
1533 DiffHunkStatus::Added => {}
1534 DiffHunkStatus::Modified => {}
1535 DiffHunkStatus::Removed => {
1536 if is_expanded {
1537 return None;
1538 }
1539 }
1540 }
1541 }
1542
1543 Some(display_hunk)
1544 })
1545 .dedup()
1546 .map(|hunk| (hunk, None))
1547 .collect();
1548
1549 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1550 for (hunk, hitbox) in &mut display_hunks {
1551 if let DisplayDiffHunk::Unfolded { .. } = hunk {
1552 let hunk_bounds = Self::diff_hunk_bounds(
1553 snapshot,
1554 line_height,
1555 gutter_hitbox.bounds,
1556 &hunk,
1557 );
1558 *hitbox = Some(cx.insert_hitbox(hunk_bounds, true));
1559 };
1560 }
1561 }
1562
1563 display_hunks
1564 })
1565 }
1566
1567 #[allow(clippy::too_many_arguments)]
1568 fn layout_inline_blame(
1569 &self,
1570 display_row: DisplayRow,
1571 display_snapshot: &DisplaySnapshot,
1572 line_layout: &LineWithInvisibles,
1573 crease_trailer: Option<&CreaseTrailerLayout>,
1574 em_width: Pixels,
1575 content_origin: gpui::Point<Pixels>,
1576 scroll_pixel_position: gpui::Point<Pixels>,
1577 line_height: Pixels,
1578 cx: &mut WindowContext,
1579 ) -> Option<AnyElement> {
1580 if !self
1581 .editor
1582 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1583 {
1584 return None;
1585 }
1586
1587 let workspace = self
1588 .editor
1589 .read(cx)
1590 .workspace
1591 .as_ref()
1592 .map(|(w, _)| w.clone());
1593
1594 let display_point = DisplayPoint::new(display_row, 0);
1595 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1596
1597 let blame = self.editor.read(cx).blame.clone()?;
1598 let blame_entry = blame
1599 .update(cx, |blame, cx| {
1600 blame.blame_for_rows([Some(buffer_row)], cx).next()
1601 })
1602 .flatten()?;
1603
1604 let mut element =
1605 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1606
1607 let start_y = content_origin.y
1608 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1609
1610 let start_x = {
1611 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1612
1613 let line_end = if let Some(crease_trailer) = crease_trailer {
1614 crease_trailer.bounds.right()
1615 } else {
1616 content_origin.x - scroll_pixel_position.x + line_layout.width
1617 };
1618 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1619
1620 let min_column_in_pixels = ProjectSettings::get_global(cx)
1621 .git
1622 .inline_blame
1623 .and_then(|settings| settings.min_column)
1624 .map(|col| self.column_pixels(col as usize, cx))
1625 .unwrap_or(px(0.));
1626 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1627
1628 cmp::max(padded_line_end, min_start)
1629 };
1630
1631 let absolute_offset = point(start_x, start_y);
1632 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1633
1634 Some(element)
1635 }
1636
1637 #[allow(clippy::too_many_arguments)]
1638 fn layout_blame_entries(
1639 &self,
1640 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1641 em_width: Pixels,
1642 scroll_position: gpui::Point<f32>,
1643 line_height: Pixels,
1644 gutter_hitbox: &Hitbox,
1645 max_width: Option<Pixels>,
1646 cx: &mut WindowContext,
1647 ) -> Option<Vec<AnyElement>> {
1648 if !self
1649 .editor
1650 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1651 {
1652 return None;
1653 }
1654
1655 let blame = self.editor.read(cx).blame.clone()?;
1656 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1657 blame.blame_for_rows(buffer_rows, cx).collect()
1658 });
1659
1660 let width = if let Some(max_width) = max_width {
1661 AvailableSpace::Definite(max_width)
1662 } else {
1663 AvailableSpace::MaxContent
1664 };
1665 let scroll_top = scroll_position.y * line_height;
1666 let start_x = em_width;
1667
1668 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1669
1670 let shaped_lines = blamed_rows
1671 .into_iter()
1672 .enumerate()
1673 .flat_map(|(ix, blame_entry)| {
1674 if let Some(blame_entry) = blame_entry {
1675 let mut element = render_blame_entry(
1676 ix,
1677 &blame,
1678 blame_entry,
1679 &self.style,
1680 &mut last_used_color,
1681 self.editor.clone(),
1682 cx,
1683 );
1684
1685 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1686 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1687
1688 element.prepaint_as_root(
1689 absolute_offset,
1690 size(width, AvailableSpace::MinContent),
1691 cx,
1692 );
1693
1694 Some(element)
1695 } else {
1696 None
1697 }
1698 })
1699 .collect();
1700
1701 Some(shaped_lines)
1702 }
1703
1704 #[allow(clippy::too_many_arguments)]
1705 fn layout_indent_guides(
1706 &self,
1707 content_origin: gpui::Point<Pixels>,
1708 text_origin: gpui::Point<Pixels>,
1709 visible_buffer_range: Range<MultiBufferRow>,
1710 scroll_pixel_position: gpui::Point<Pixels>,
1711 line_height: Pixels,
1712 snapshot: &DisplaySnapshot,
1713 cx: &mut WindowContext,
1714 ) -> Option<Vec<IndentGuideLayout>> {
1715 let indent_guides = self.editor.update(cx, |editor, cx| {
1716 editor.indent_guides(visible_buffer_range, snapshot, cx)
1717 })?;
1718
1719 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1720 editor
1721 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1722 .unwrap_or_default()
1723 });
1724
1725 Some(
1726 indent_guides
1727 .into_iter()
1728 .enumerate()
1729 .filter_map(|(i, indent_guide)| {
1730 let single_indent_width =
1731 self.column_pixels(indent_guide.tab_size as usize, cx);
1732 let total_width = single_indent_width * indent_guide.depth as f32;
1733 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1734 if start_x >= text_origin.x {
1735 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1736 indent_guide.multibuffer_row_range.clone(),
1737 line_height,
1738 snapshot,
1739 );
1740
1741 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1742
1743 Some(IndentGuideLayout {
1744 origin: point(start_x, start_y),
1745 length,
1746 single_indent_width,
1747 depth: indent_guide.depth,
1748 active: active_indent_guide_indices.contains(&i),
1749 settings: indent_guide.settings,
1750 })
1751 } else {
1752 None
1753 }
1754 })
1755 .collect(),
1756 )
1757 }
1758
1759 fn calculate_indent_guide_bounds(
1760 row_range: Range<MultiBufferRow>,
1761 line_height: Pixels,
1762 snapshot: &DisplaySnapshot,
1763 ) -> (gpui::Pixels, gpui::Pixels) {
1764 let start_point = Point::new(row_range.start.0, 0);
1765 let end_point = Point::new(row_range.end.0, 0);
1766
1767 let row_range = start_point.to_display_point(snapshot).row()
1768 ..end_point.to_display_point(snapshot).row();
1769
1770 let mut prev_line = start_point;
1771 prev_line.row = prev_line.row.saturating_sub(1);
1772 let prev_line = prev_line.to_display_point(snapshot).row();
1773
1774 let mut cons_line = end_point;
1775 cons_line.row += 1;
1776 let cons_line = cons_line.to_display_point(snapshot).row();
1777
1778 let mut offset_y = row_range.start.0 as f32 * line_height;
1779 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1780
1781 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1782 if row_range.end == cons_line {
1783 length += line_height;
1784 }
1785
1786 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1787 // we want to extend the indent guide to the start of the block.
1788 let mut block_height = 0;
1789 let mut block_offset = 0;
1790 let mut found_excerpt_header = false;
1791 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1792 if matches!(block, Block::ExcerptBoundary { .. }) {
1793 found_excerpt_header = true;
1794 break;
1795 }
1796 block_offset += block.height();
1797 block_height += block.height();
1798 }
1799 if !found_excerpt_header {
1800 offset_y -= block_offset as f32 * line_height;
1801 length += block_height as f32 * line_height;
1802 }
1803
1804 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1805 // we want to ensure that the indent guide stops before the excerpt header.
1806 let mut block_height = 0;
1807 let mut found_excerpt_header = false;
1808 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1809 if matches!(block, Block::ExcerptBoundary { .. }) {
1810 found_excerpt_header = true;
1811 }
1812 block_height += block.height();
1813 }
1814 if found_excerpt_header {
1815 length -= block_height as f32 * line_height;
1816 }
1817
1818 (offset_y, length)
1819 }
1820
1821 #[allow(clippy::too_many_arguments)]
1822 fn layout_run_indicators(
1823 &self,
1824 line_height: Pixels,
1825 range: Range<DisplayRow>,
1826 scroll_pixel_position: gpui::Point<Pixels>,
1827 gutter_dimensions: &GutterDimensions,
1828 gutter_hitbox: &Hitbox,
1829 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1830 snapshot: &EditorSnapshot,
1831 cx: &mut WindowContext,
1832 ) -> Vec<AnyElement> {
1833 self.editor.update(cx, |editor, cx| {
1834 let active_task_indicator_row =
1835 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1836 deployed_from_indicator,
1837 actions,
1838 ..
1839 })) = editor.context_menu.borrow().as_ref()
1840 {
1841 actions
1842 .tasks
1843 .as_ref()
1844 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1845 .or(*deployed_from_indicator)
1846 } else {
1847 None
1848 };
1849
1850 let offset_range_start = snapshot
1851 .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
1852 .to_offset(&snapshot.buffer_snapshot);
1853 let offset_range_end = snapshot
1854 .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
1855 .to_offset(&snapshot.buffer_snapshot);
1856
1857 editor
1858 .tasks
1859 .iter()
1860 .filter_map(|(_, tasks)| {
1861 if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
1862 return None;
1863 }
1864 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1865 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1866 let buffer_folded = snapshot
1867 .buffer_snapshot
1868 .buffer_line_for_row(multibuffer_row)
1869 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
1870 .map(|buffer_id| editor.buffer_folded(buffer_id, cx))
1871 .unwrap_or(false);
1872 if buffer_folded {
1873 return None;
1874 }
1875
1876 if snapshot.is_line_folded(multibuffer_row) {
1877 // Skip folded indicators, unless it's the starting line of a fold.
1878 if multibuffer_row
1879 .0
1880 .checked_sub(1)
1881 .map_or(false, |previous_row| {
1882 snapshot.is_line_folded(MultiBufferRow(previous_row))
1883 })
1884 {
1885 return None;
1886 }
1887 }
1888 let display_row = multibuffer_point.to_display_point(snapshot).row();
1889 let button = editor.render_run_indicator(
1890 &self.style,
1891 Some(display_row) == active_task_indicator_row,
1892 display_row,
1893 cx,
1894 );
1895
1896 let button = prepaint_gutter_button(
1897 button,
1898 display_row,
1899 line_height,
1900 gutter_dimensions,
1901 scroll_pixel_position,
1902 gutter_hitbox,
1903 rows_with_hunk_bounds,
1904 cx,
1905 );
1906 Some(button)
1907 })
1908 .collect_vec()
1909 })
1910 }
1911
1912 #[allow(clippy::too_many_arguments)]
1913 fn layout_code_actions_indicator(
1914 &self,
1915 line_height: Pixels,
1916 newest_selection_head: DisplayPoint,
1917 scroll_pixel_position: gpui::Point<Pixels>,
1918 gutter_dimensions: &GutterDimensions,
1919 gutter_hitbox: &Hitbox,
1920 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1921 cx: &mut WindowContext,
1922 ) -> Option<AnyElement> {
1923 let mut active = false;
1924 let mut button = None;
1925 let row = newest_selection_head.row();
1926 self.editor.update(cx, |editor, cx| {
1927 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1928 deployed_from_indicator,
1929 ..
1930 })) = editor.context_menu.borrow().as_ref()
1931 {
1932 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1933 };
1934 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1935 });
1936
1937 let button = prepaint_gutter_button(
1938 button?,
1939 row,
1940 line_height,
1941 gutter_dimensions,
1942 scroll_pixel_position,
1943 gutter_hitbox,
1944 rows_with_hunk_bounds,
1945 cx,
1946 );
1947
1948 Some(button)
1949 }
1950
1951 fn get_participant_color(
1952 participant_index: Option<ParticipantIndex>,
1953 cx: &WindowContext,
1954 ) -> PlayerColor {
1955 if let Some(index) = participant_index {
1956 cx.theme().players().color_for_participant(index.0)
1957 } else {
1958 cx.theme().players().absent()
1959 }
1960 }
1961
1962 fn calculate_relative_line_numbers(
1963 &self,
1964 snapshot: &EditorSnapshot,
1965 rows: &Range<DisplayRow>,
1966 relative_to: Option<DisplayRow>,
1967 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1968 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1969 let Some(relative_to) = relative_to else {
1970 return relative_rows;
1971 };
1972
1973 let start = rows.start.min(relative_to);
1974 let end = rows.end.max(relative_to);
1975
1976 let buffer_rows = snapshot
1977 .buffer_rows(start)
1978 .take(1 + end.minus(start) as usize)
1979 .collect::<Vec<_>>();
1980
1981 let head_idx = relative_to.minus(start);
1982 let mut delta = 1;
1983 let mut i = head_idx + 1;
1984 while i < buffer_rows.len() as u32 {
1985 if buffer_rows[i as usize].is_some() {
1986 if rows.contains(&DisplayRow(i + start.0)) {
1987 relative_rows.insert(DisplayRow(i + start.0), delta);
1988 }
1989 delta += 1;
1990 }
1991 i += 1;
1992 }
1993 delta = 1;
1994 i = head_idx.min(buffer_rows.len() as u32 - 1);
1995 while i > 0 && buffer_rows[i as usize].is_none() {
1996 i -= 1;
1997 }
1998
1999 while i > 0 {
2000 i -= 1;
2001 if buffer_rows[i as usize].is_some() {
2002 if rows.contains(&DisplayRow(i + start.0)) {
2003 relative_rows.insert(DisplayRow(i + start.0), delta);
2004 }
2005 delta += 1;
2006 }
2007 }
2008
2009 relative_rows
2010 }
2011
2012 #[allow(clippy::too_many_arguments)]
2013 fn layout_line_numbers(
2014 &self,
2015 gutter_hitbox: Option<&Hitbox>,
2016 gutter_dimensions: GutterDimensions,
2017 line_height: Pixels,
2018 scroll_position: gpui::Point<f32>,
2019 rows: Range<DisplayRow>,
2020 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
2021 active_rows: &BTreeMap<DisplayRow, bool>,
2022 newest_selection_head: Option<DisplayPoint>,
2023 snapshot: &EditorSnapshot,
2024 cx: &mut WindowContext,
2025 ) -> Arc<HashMap<MultiBufferRow, (ShapedLine, Option<Hitbox>)>> {
2026 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
2027 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
2028 });
2029 if !include_line_numbers {
2030 return Arc::default();
2031 }
2032
2033 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
2034 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
2035 let newest = editor.selections.newest::<Point>(cx);
2036 SelectionLayout::new(
2037 newest,
2038 editor.selections.line_mode,
2039 editor.cursor_shape,
2040 &snapshot.display_snapshot,
2041 true,
2042 true,
2043 None,
2044 )
2045 .head
2046 });
2047 let is_relative = editor.should_use_relative_line_numbers(cx);
2048 (newest_selection_head, is_relative)
2049 });
2050
2051 let relative_to = if is_relative {
2052 Some(newest_selection_head.row())
2053 } else {
2054 None
2055 };
2056 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2057 let mut line_number = String::new();
2058 let line_numbers = buffer_rows
2059 .into_iter()
2060 .enumerate()
2061 .flat_map(|(ix, buffer_row)| {
2062 let buffer_row = buffer_row?;
2063 let display_row = DisplayRow(rows.start.0 + ix as u32);
2064 let color = if active_rows.contains_key(&display_row) {
2065 cx.theme().colors().editor_active_line_number
2066 } else {
2067 cx.theme().colors().editor_line_number
2068 };
2069 line_number.clear();
2070 let default_number = buffer_row.0 + 1;
2071 let number = relative_rows
2072 .get(&DisplayRow(ix as u32 + rows.start.0))
2073 .unwrap_or(&default_number);
2074 write!(&mut line_number, "{number}").unwrap();
2075
2076 let shaped_line = self
2077 .shape_line_number(SharedString::from(&line_number), color, cx)
2078 .log_err()?;
2079 let scroll_top = scroll_position.y * line_height;
2080 let line_origin = gutter_hitbox.map(|hitbox| {
2081 hitbox.origin
2082 + point(
2083 hitbox.size.width - shaped_line.width - gutter_dimensions.right_padding,
2084 ix as f32 * line_height - (scroll_top % line_height),
2085 )
2086 });
2087
2088 #[cfg(not(test))]
2089 let hitbox = line_origin.map(|line_origin| {
2090 cx.insert_hitbox(
2091 Bounds::new(line_origin, size(shaped_line.width, line_height)),
2092 false,
2093 )
2094 });
2095 #[cfg(test)]
2096 let hitbox = {
2097 let _ = line_origin;
2098 None
2099 };
2100
2101 let multi_buffer_row = DisplayPoint::new(display_row, 0).to_point(snapshot).row;
2102 let multi_buffer_row = MultiBufferRow(multi_buffer_row);
2103 Some((multi_buffer_row, (shaped_line, hitbox)))
2104 })
2105 .collect();
2106 Arc::new(line_numbers)
2107 }
2108
2109 fn layout_crease_toggles(
2110 &self,
2111 rows: Range<DisplayRow>,
2112 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2113 active_rows: &BTreeMap<DisplayRow, bool>,
2114 snapshot: &EditorSnapshot,
2115 cx: &mut WindowContext,
2116 ) -> Vec<Option<AnyElement>> {
2117 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2118 && snapshot.mode == EditorMode::Full
2119 && self.editor.read(cx).is_singleton(cx);
2120 if include_fold_statuses {
2121 buffer_rows
2122 .into_iter()
2123 .enumerate()
2124 .map(|(ix, row)| {
2125 if let Some(multibuffer_row) = row {
2126 let display_row = DisplayRow(rows.start.0 + ix as u32);
2127 let active = active_rows.contains_key(&display_row);
2128 snapshot.render_crease_toggle(
2129 multibuffer_row,
2130 active,
2131 self.editor.clone(),
2132 cx,
2133 )
2134 } else {
2135 None
2136 }
2137 })
2138 .collect()
2139 } else {
2140 Vec::new()
2141 }
2142 }
2143
2144 fn layout_crease_trailers(
2145 &self,
2146 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2147 snapshot: &EditorSnapshot,
2148 cx: &mut WindowContext,
2149 ) -> Vec<Option<AnyElement>> {
2150 buffer_rows
2151 .into_iter()
2152 .map(|row| {
2153 if let Some(multibuffer_row) = row {
2154 snapshot.render_crease_trailer(multibuffer_row, cx)
2155 } else {
2156 None
2157 }
2158 })
2159 .collect()
2160 }
2161
2162 fn layout_lines(
2163 rows: Range<DisplayRow>,
2164 snapshot: &EditorSnapshot,
2165 style: &EditorStyle,
2166 editor_width: Pixels,
2167 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2168 cx: &mut WindowContext,
2169 ) -> Vec<LineWithInvisibles> {
2170 if rows.start >= rows.end {
2171 return Vec::new();
2172 }
2173
2174 // Show the placeholder when the editor is empty
2175 if snapshot.is_empty() {
2176 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2177 let placeholder_color = cx.theme().colors().text_placeholder;
2178 let placeholder_text = snapshot.placeholder_text();
2179
2180 let placeholder_lines = placeholder_text
2181 .as_ref()
2182 .map_or("", AsRef::as_ref)
2183 .split('\n')
2184 .skip(rows.start.0 as usize)
2185 .chain(iter::repeat(""))
2186 .take(rows.len());
2187 placeholder_lines
2188 .filter_map(move |line| {
2189 let run = TextRun {
2190 len: line.len(),
2191 font: style.text.font(),
2192 color: placeholder_color,
2193 background_color: None,
2194 underline: Default::default(),
2195 strikethrough: None,
2196 };
2197 cx.text_system()
2198 .shape_line(line.to_string().into(), font_size, &[run])
2199 .log_err()
2200 })
2201 .map(|line| LineWithInvisibles {
2202 width: line.width,
2203 len: line.len,
2204 fragments: smallvec![LineFragment::Text(line)],
2205 invisibles: Vec::new(),
2206 font_size,
2207 })
2208 .collect()
2209 } else {
2210 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2211 LineWithInvisibles::from_chunks(
2212 chunks,
2213 &style,
2214 MAX_LINE_LEN,
2215 rows.len(),
2216 snapshot.mode,
2217 editor_width,
2218 is_row_soft_wrapped,
2219 cx,
2220 )
2221 }
2222 }
2223
2224 fn prepaint_lines(
2225 &self,
2226 start_row: DisplayRow,
2227 line_layouts: &mut [LineWithInvisibles],
2228 line_height: Pixels,
2229 scroll_pixel_position: gpui::Point<Pixels>,
2230 content_origin: gpui::Point<Pixels>,
2231 cx: &mut WindowContext,
2232 ) -> SmallVec<[AnyElement; 1]> {
2233 let mut line_elements = SmallVec::new();
2234 for (ix, line) in line_layouts.iter_mut().enumerate() {
2235 let row = start_row + DisplayRow(ix as u32);
2236 line.prepaint(
2237 line_height,
2238 scroll_pixel_position,
2239 row,
2240 content_origin,
2241 &mut line_elements,
2242 cx,
2243 );
2244 }
2245 line_elements
2246 }
2247
2248 #[allow(clippy::too_many_arguments)]
2249 fn render_block(
2250 &self,
2251 block: &Block,
2252 available_width: AvailableSpace,
2253 block_id: BlockId,
2254 block_row_start: DisplayRow,
2255 snapshot: &EditorSnapshot,
2256 text_x: Pixels,
2257 rows: &Range<DisplayRow>,
2258 line_layouts: &[LineWithInvisibles],
2259 gutter_dimensions: &GutterDimensions,
2260 line_height: Pixels,
2261 em_width: Pixels,
2262 text_hitbox: &Hitbox,
2263 editor_width: Pixels,
2264 scroll_width: &mut Pixels,
2265 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2266 selections: &[Selection<Point>],
2267 selected_buffer_ids: &Vec<BufferId>,
2268 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2269 sticky_header_excerpt_id: Option<ExcerptId>,
2270 cx: &mut WindowContext,
2271 ) -> (AnyElement, Size<Pixels>) {
2272 let mut element = match block {
2273 Block::Custom(block) => {
2274 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2275 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2276 let align_to = block_start.to_display_point(snapshot);
2277 let anchor_x = text_x
2278 + if rows.contains(&align_to.row()) {
2279 line_layouts[align_to.row().minus(rows.start) as usize]
2280 .x_for_index(align_to.column() as usize)
2281 } else {
2282 layout_line(
2283 align_to.row(),
2284 snapshot,
2285 &self.style,
2286 editor_width,
2287 is_row_soft_wrapped,
2288 cx,
2289 )
2290 .x_for_index(align_to.column() as usize)
2291 };
2292
2293 let selected = selections
2294 .binary_search_by(|selection| {
2295 if selection.end <= block_start {
2296 Ordering::Less
2297 } else if selection.start >= block_end {
2298 Ordering::Greater
2299 } else {
2300 Ordering::Equal
2301 }
2302 })
2303 .is_ok();
2304
2305 div()
2306 .size_full()
2307 .child(block.render(&mut BlockContext {
2308 context: cx,
2309 anchor_x,
2310 gutter_dimensions,
2311 line_height,
2312 em_width,
2313 block_id,
2314 selected,
2315 max_width: text_hitbox.size.width.max(*scroll_width),
2316 editor_style: &self.style,
2317 }))
2318 .into_any()
2319 }
2320
2321 Block::FoldedBuffer {
2322 first_excerpt,
2323 prev_excerpt,
2324 show_excerpt_controls,
2325 height,
2326 } => {
2327 let selected = selected_buffer_ids.contains(&first_excerpt.buffer_id);
2328 let icon_offset = gutter_dimensions.width
2329 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2330 let mut result = v_flex().id(block_id).w_full();
2331
2332 if let Some(prev_excerpt) = prev_excerpt {
2333 if *show_excerpt_controls {
2334 result = result.child(
2335 h_flex()
2336 .id("expand_down_hit_area")
2337 .w(icon_offset)
2338 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2339 .flex_none()
2340 .justify_end()
2341 .child(self.render_expand_excerpt_button(
2342 IconName::ArrowDownFromLine,
2343 None,
2344 cx,
2345 ))
2346 .on_click(cx.listener_for(&self.editor, {
2347 let excerpt_id = prev_excerpt.id;
2348 let direction = ExpandExcerptDirection::Down;
2349 move |editor, _, cx| {
2350 editor.expand_excerpt(excerpt_id, direction, cx);
2351 cx.stop_propagation();
2352 }
2353 })),
2354 );
2355 }
2356 }
2357
2358 let jump_data = header_jump_data(snapshot, block_row_start, *height, first_excerpt);
2359 result
2360 .child(self.render_buffer_header(first_excerpt, true, selected, jump_data, cx))
2361 .into_any_element()
2362 }
2363
2364 Block::ExcerptBoundary {
2365 prev_excerpt,
2366 next_excerpt,
2367 show_excerpt_controls,
2368 height,
2369 starts_new_buffer,
2370 } => {
2371 let icon_offset = gutter_dimensions.width
2372 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2373 let header_height = MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height();
2374 let color = cx.theme().colors().clone();
2375 let hover_color = color.border_variant.opacity(0.5);
2376 let focus_handle = self.editor.focus_handle(cx).clone();
2377
2378 let mut result = v_flex().id(block_id).w_full();
2379 let expand_area = |id: SharedString| {
2380 h_flex()
2381 .id(id)
2382 .w_full()
2383 .cursor_pointer()
2384 .block_mouse_down()
2385 .on_mouse_move(|_, cx| cx.stop_propagation())
2386 .hover(|style| style.bg(hover_color))
2387 .tooltip({
2388 let focus_handle = focus_handle.clone();
2389 move |cx| {
2390 Tooltip::for_action_in(
2391 "Expand Excerpt",
2392 &ExpandExcerpts { lines: 0 },
2393 &focus_handle,
2394 cx,
2395 )
2396 }
2397 })
2398 };
2399
2400 if let Some(prev_excerpt) = prev_excerpt {
2401 if *show_excerpt_controls {
2402 let group_name = "expand-down";
2403
2404 result = result.child(
2405 expand_area(format!("block-{}-down", block_id).into())
2406 .group(group_name)
2407 .child(
2408 h_flex()
2409 .w(icon_offset)
2410 .h(header_height)
2411 .flex_none()
2412 .justify_end()
2413 .child(self.render_expand_excerpt_button(
2414 IconName::ArrowDownFromLine,
2415 Some(group_name.to_string()),
2416 cx,
2417 )),
2418 )
2419 .on_click(cx.listener_for(&self.editor, {
2420 let excerpt_id = prev_excerpt.id;
2421 let direction = ExpandExcerptDirection::Down;
2422 move |editor, _, cx| {
2423 editor.expand_excerpt(excerpt_id, direction, cx);
2424 cx.stop_propagation();
2425 }
2426 })),
2427 );
2428 }
2429 }
2430
2431 if let Some(next_excerpt) = next_excerpt {
2432 let jump_data =
2433 header_jump_data(snapshot, block_row_start, *height, next_excerpt);
2434
2435 if *starts_new_buffer {
2436 if sticky_header_excerpt_id != Some(next_excerpt.id) {
2437 let selected = selected_buffer_ids.contains(&next_excerpt.buffer_id);
2438
2439 result = result.child(self.render_buffer_header(
2440 next_excerpt,
2441 false,
2442 selected,
2443 jump_data,
2444 cx,
2445 ));
2446 } else {
2447 result =
2448 result.child(div().h(FILE_HEADER_HEIGHT as f32 * cx.line_height()));
2449 }
2450
2451 if *show_excerpt_controls {
2452 let group_name = "expand-up-first";
2453
2454 result = result.child(
2455 h_flex().group(group_name).child(
2456 expand_area(format!("block-{}-up-first", block_id).into())
2457 .h(header_height)
2458 .child(
2459 h_flex()
2460 .w(icon_offset)
2461 .h(header_height)
2462 .flex_none()
2463 .justify_end()
2464 .child(self.render_expand_excerpt_button(
2465 IconName::ArrowUpFromLine,
2466 Some(group_name.to_string()),
2467 cx,
2468 )),
2469 )
2470 .on_click(cx.listener_for(&self.editor, {
2471 let excerpt_id = next_excerpt.id;
2472 let direction = ExpandExcerptDirection::Up;
2473 move |editor, _, cx| {
2474 editor.expand_excerpt(excerpt_id, direction, cx);
2475 cx.stop_propagation();
2476 }
2477 })),
2478 ),
2479 );
2480 }
2481 } else {
2482 let group_name = "expand-up-subsequent";
2483
2484 if *show_excerpt_controls {
2485 result = result.child(
2486 h_flex()
2487 .relative()
2488 .group(group_name)
2489 .child(
2490 div()
2491 .top(px(0.))
2492 .absolute()
2493 .w_full()
2494 .h_px()
2495 .bg(color.border_variant),
2496 )
2497 .child(
2498 expand_area(format!("block-{}-up", block_id).into())
2499 .h(header_height)
2500 .child(
2501 h_flex()
2502 .w(icon_offset)
2503 .h(header_height)
2504 .flex_none()
2505 .justify_end()
2506 .child(if *show_excerpt_controls {
2507 self.render_expand_excerpt_button(
2508 IconName::ArrowUpFromLine,
2509 Some(group_name.to_string()),
2510 cx,
2511 )
2512 } else {
2513 ButtonLike::new("jump-icon")
2514 .style(ButtonStyle::Transparent)
2515 .child(
2516 svg()
2517 .path(
2518 IconName::ArrowUpRight
2519 .path(),
2520 )
2521 .size(IconSize::XSmall.rems())
2522 .text_color(
2523 color.border_variant,
2524 )
2525 .group_hover(
2526 group_name,
2527 |style| {
2528 style.text_color(
2529 color.border,
2530 )
2531 },
2532 ),
2533 )
2534 }),
2535 )
2536 .on_click(cx.listener_for(&self.editor, {
2537 let excerpt_id = next_excerpt.id;
2538 let direction = ExpandExcerptDirection::Up;
2539 move |editor, _, cx| {
2540 editor
2541 .expand_excerpt(excerpt_id, direction, cx);
2542 cx.stop_propagation();
2543 }
2544 })),
2545 ),
2546 );
2547 }
2548 };
2549 }
2550
2551 result.into_any()
2552 }
2553 };
2554
2555 // Discover the element's content height, then round up to the nearest multiple of line height.
2556 let preliminary_size =
2557 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2558 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2559 let final_size = if preliminary_size.height == quantized_height {
2560 preliminary_size
2561 } else {
2562 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2563 };
2564
2565 if let BlockId::Custom(custom_block_id) = block_id {
2566 if block.height() > 0 {
2567 let element_height_in_lines =
2568 ((final_size.height / line_height).ceil() as u32).max(1);
2569 if element_height_in_lines != block.height() {
2570 resized_blocks.insert(custom_block_id, element_height_in_lines);
2571 }
2572 }
2573 }
2574
2575 (element, final_size)
2576 }
2577
2578 fn render_buffer_header(
2579 &self,
2580 for_excerpt: &ExcerptInfo,
2581 is_folded: bool,
2582 is_selected: bool,
2583 jump_data: JumpData,
2584 cx: &mut WindowContext,
2585 ) -> Div {
2586 let include_root = self
2587 .editor
2588 .read(cx)
2589 .project
2590 .as_ref()
2591 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2592 .unwrap_or_default();
2593 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2594 let filename = path
2595 .as_ref()
2596 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2597 let parent_path = path
2598 .as_ref()
2599 .and_then(|path| Some(path.parent()?.to_string_lossy().to_string() + "/"));
2600 let focus_handle = self.editor.focus_handle(cx);
2601 let colors = cx.theme().colors();
2602
2603 div()
2604 .px_2()
2605 .pt_2()
2606 .w_full()
2607 .h(FILE_HEADER_HEIGHT as f32 * cx.line_height())
2608 .child(
2609 h_flex()
2610 .size_full()
2611 .gap_2()
2612 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2613 .pl_0p5()
2614 .pr_5()
2615 .rounded_md()
2616 .shadow_md()
2617 .border_1()
2618 .map(|div| {
2619 let border_color = if is_selected && is_folded {
2620 colors.border_focused
2621 } else {
2622 colors.border
2623 };
2624 div.border_color(border_color)
2625 })
2626 .bg(colors.editor_subheader_background)
2627 .hover(|style| style.bg(colors.element_hover))
2628 .map(|header| {
2629 let editor = self.editor.clone();
2630 let buffer_id = for_excerpt.buffer_id;
2631 let toggle_chevron_icon =
2632 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2633 header.child(
2634 div()
2635 .hover(|style| style.bg(colors.element_selected))
2636 .rounded_sm()
2637 .child(
2638 ButtonLike::new("toggle-buffer-fold")
2639 .style(ui::ButtonStyle::Transparent)
2640 .size(ButtonSize::Large)
2641 .width(px(30.).into())
2642 .children(toggle_chevron_icon)
2643 .tooltip({
2644 let focus_handle = focus_handle.clone();
2645 move |cx| {
2646 Tooltip::for_action_in(
2647 "Toggle Excerpt Fold",
2648 &ToggleFold,
2649 &focus_handle,
2650 cx,
2651 )
2652 }
2653 })
2654 .on_click(move |_, cx| {
2655 if is_folded {
2656 editor.update(cx, |editor, cx| {
2657 editor.unfold_buffer(buffer_id, cx);
2658 });
2659 } else {
2660 editor.update(cx, |editor, cx| {
2661 editor.fold_buffer(buffer_id, cx);
2662 });
2663 }
2664 }),
2665 ),
2666 )
2667 })
2668 .child(
2669 h_flex()
2670 .cursor_pointer()
2671 .id("path header block")
2672 .size_full()
2673 .justify_between()
2674 .child(
2675 h_flex()
2676 .gap_2()
2677 .child(
2678 filename
2679 .map(SharedString::from)
2680 .unwrap_or_else(|| "untitled".into()),
2681 )
2682 .when_some(parent_path, |then, path| {
2683 then.child(div().child(path).text_color(colors.text_muted))
2684 }),
2685 )
2686 .when(is_selected, |el| {
2687 el.child(
2688 h_flex()
2689 .id("jump-to-file-button")
2690 .gap_2p5()
2691 .child(Label::new("Jump To File"))
2692 .children(
2693 KeyBinding::for_action_in(
2694 &OpenExcerpts,
2695 &focus_handle,
2696 cx,
2697 )
2698 .map(|binding| binding.into_any_element()),
2699 ),
2700 )
2701 })
2702 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2703 .on_click(cx.listener_for(&self.editor, {
2704 move |editor, e: &ClickEvent, cx| {
2705 editor.open_excerpts_common(
2706 Some(jump_data.clone()),
2707 e.down.modifiers.secondary(),
2708 cx,
2709 );
2710 }
2711 })),
2712 ),
2713 )
2714 }
2715
2716 fn render_expand_excerpt_button(
2717 &self,
2718 icon: IconName,
2719 group_name: impl Into<Option<String>>,
2720 cx: &mut WindowContext,
2721 ) -> ButtonLike {
2722 let group_name = group_name.into();
2723 ButtonLike::new("expand-icon")
2724 .style(ButtonStyle::Transparent)
2725 .child(
2726 svg()
2727 .path(icon.path())
2728 .size(IconSize::XSmall.rems())
2729 .text_color(cx.theme().colors().editor_line_number)
2730 .when_some(group_name, |svg, group_name| {
2731 svg.group_hover(group_name, |style| {
2732 style.text_color(cx.theme().colors().editor_active_line_number)
2733 })
2734 }),
2735 )
2736 }
2737
2738 #[allow(clippy::too_many_arguments)]
2739 fn render_blocks(
2740 &self,
2741 rows: Range<DisplayRow>,
2742 snapshot: &EditorSnapshot,
2743 hitbox: &Hitbox,
2744 text_hitbox: &Hitbox,
2745 editor_width: Pixels,
2746 scroll_width: &mut Pixels,
2747 gutter_dimensions: &GutterDimensions,
2748 em_width: Pixels,
2749 text_x: Pixels,
2750 line_height: Pixels,
2751 line_layouts: &[LineWithInvisibles],
2752 selections: &[Selection<Point>],
2753 selected_buffer_ids: &Vec<BufferId>,
2754 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2755 sticky_header_excerpt_id: Option<ExcerptId>,
2756 cx: &mut WindowContext,
2757 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2758 let (fixed_blocks, non_fixed_blocks) = snapshot
2759 .blocks_in_range(rows.clone())
2760 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2761
2762 let mut focused_block = self
2763 .editor
2764 .update(cx, |editor, _| editor.take_focused_block());
2765 let mut fixed_block_max_width = Pixels::ZERO;
2766 let mut blocks = Vec::new();
2767 let mut resized_blocks = HashMap::default();
2768
2769 for (row, block) in fixed_blocks {
2770 let block_id = block.id();
2771
2772 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2773 focused_block = None;
2774 }
2775
2776 let (element, element_size) = self.render_block(
2777 block,
2778 AvailableSpace::MinContent,
2779 block_id,
2780 row,
2781 snapshot,
2782 text_x,
2783 &rows,
2784 line_layouts,
2785 gutter_dimensions,
2786 line_height,
2787 em_width,
2788 text_hitbox,
2789 editor_width,
2790 scroll_width,
2791 &mut resized_blocks,
2792 selections,
2793 selected_buffer_ids,
2794 is_row_soft_wrapped,
2795 sticky_header_excerpt_id,
2796 cx,
2797 );
2798 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2799 blocks.push(BlockLayout {
2800 id: block_id,
2801 row: Some(row),
2802 element,
2803 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2804 style: BlockStyle::Fixed,
2805 });
2806 }
2807
2808 for (row, block) in non_fixed_blocks {
2809 let style = block.style();
2810 let width = match style {
2811 BlockStyle::Sticky => hitbox.size.width,
2812 BlockStyle::Flex => hitbox
2813 .size
2814 .width
2815 .max(fixed_block_max_width)
2816 .max(gutter_dimensions.width + *scroll_width),
2817 BlockStyle::Fixed => unreachable!(),
2818 };
2819 let block_id = block.id();
2820
2821 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2822 focused_block = None;
2823 }
2824
2825 let (element, element_size) = self.render_block(
2826 block,
2827 width.into(),
2828 block_id,
2829 row,
2830 snapshot,
2831 text_x,
2832 &rows,
2833 line_layouts,
2834 gutter_dimensions,
2835 line_height,
2836 em_width,
2837 text_hitbox,
2838 editor_width,
2839 scroll_width,
2840 &mut resized_blocks,
2841 selections,
2842 selected_buffer_ids,
2843 is_row_soft_wrapped,
2844 sticky_header_excerpt_id,
2845 cx,
2846 );
2847
2848 blocks.push(BlockLayout {
2849 id: block_id,
2850 row: Some(row),
2851 element,
2852 available_space: size(width.into(), element_size.height.into()),
2853 style,
2854 });
2855 }
2856
2857 if let Some(focused_block) = focused_block {
2858 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2859 if focus_handle.is_focused(cx) {
2860 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2861 let style = block.style();
2862 let width = match style {
2863 BlockStyle::Fixed => AvailableSpace::MinContent,
2864 BlockStyle::Flex => AvailableSpace::Definite(
2865 hitbox
2866 .size
2867 .width
2868 .max(fixed_block_max_width)
2869 .max(gutter_dimensions.width + *scroll_width),
2870 ),
2871 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2872 };
2873
2874 let (element, element_size) = self.render_block(
2875 &block,
2876 width,
2877 focused_block.id,
2878 rows.end,
2879 snapshot,
2880 text_x,
2881 &rows,
2882 line_layouts,
2883 gutter_dimensions,
2884 line_height,
2885 em_width,
2886 text_hitbox,
2887 editor_width,
2888 scroll_width,
2889 &mut resized_blocks,
2890 selections,
2891 selected_buffer_ids,
2892 is_row_soft_wrapped,
2893 sticky_header_excerpt_id,
2894 cx,
2895 );
2896
2897 blocks.push(BlockLayout {
2898 id: block.id(),
2899 row: None,
2900 element,
2901 available_space: size(width, element_size.height.into()),
2902 style,
2903 });
2904 }
2905 }
2906 }
2907 }
2908
2909 if resized_blocks.is_empty() {
2910 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2911 Ok(blocks)
2912 } else {
2913 Err(resized_blocks)
2914 }
2915 }
2916
2917 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2918 /// a restart of rendering for the editor based on the new sizes.
2919 fn layout_blocks(
2920 &self,
2921 blocks: &mut Vec<BlockLayout>,
2922 block_starts: &mut HashSet<DisplayRow>,
2923 hitbox: &Hitbox,
2924 line_height: Pixels,
2925 scroll_pixel_position: gpui::Point<Pixels>,
2926 cx: &mut WindowContext,
2927 ) {
2928 for block in blocks {
2929 let mut origin = if let Some(row) = block.row {
2930 block_starts.insert(row);
2931 hitbox.origin
2932 + point(
2933 Pixels::ZERO,
2934 row.as_f32() * line_height - scroll_pixel_position.y,
2935 )
2936 } else {
2937 // Position the block outside the visible area
2938 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2939 };
2940
2941 if !matches!(block.style, BlockStyle::Sticky) {
2942 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2943 }
2944
2945 let focus_handle = block
2946 .element
2947 .prepaint_as_root(origin, block.available_space, cx);
2948
2949 if let Some(focus_handle) = focus_handle {
2950 self.editor.update(cx, |editor, _cx| {
2951 editor.set_focused_block(FocusedBlock {
2952 id: block.id,
2953 focus_handle: focus_handle.downgrade(),
2954 });
2955 });
2956 }
2957 }
2958 }
2959
2960 #[allow(clippy::too_many_arguments)]
2961 fn layout_sticky_buffer_header(
2962 &self,
2963 StickyHeaderExcerpt {
2964 excerpt,
2965 next_excerpt_controls_present,
2966 next_buffer_row,
2967 }: StickyHeaderExcerpt<'_>,
2968 scroll_position: f32,
2969 line_height: Pixels,
2970 snapshot: &EditorSnapshot,
2971 hitbox: &Hitbox,
2972 selected_buffer_ids: &Vec<BufferId>,
2973 cx: &mut WindowContext,
2974 ) -> AnyElement {
2975 let jump_data = header_jump_data(
2976 snapshot,
2977 DisplayRow(scroll_position as u32),
2978 FILE_HEADER_HEIGHT + MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
2979 excerpt,
2980 );
2981
2982 let editor_bg_color = cx.theme().colors().editor_background;
2983
2984 let selected = selected_buffer_ids.contains(&excerpt.buffer_id);
2985
2986 let mut header = v_flex()
2987 .relative()
2988 .child(
2989 div()
2990 .w(hitbox.bounds.size.width)
2991 .h(FILE_HEADER_HEIGHT as f32 * line_height)
2992 .bg(linear_gradient(
2993 0.,
2994 linear_color_stop(editor_bg_color.opacity(0.), 0.),
2995 linear_color_stop(editor_bg_color, 0.6),
2996 ))
2997 .absolute()
2998 .top_0(),
2999 )
3000 .child(
3001 self.render_buffer_header(excerpt, false, selected, jump_data, cx)
3002 .into_any_element(),
3003 )
3004 .into_any_element();
3005
3006 let mut origin = hitbox.origin;
3007
3008 if let Some(next_buffer_row) = next_buffer_row {
3009 // Push up the sticky header when the excerpt is getting close to the top of the viewport
3010
3011 let mut max_row = next_buffer_row - FILE_HEADER_HEIGHT * 2;
3012
3013 if next_excerpt_controls_present {
3014 max_row -= MULTI_BUFFER_EXCERPT_HEADER_HEIGHT;
3015 }
3016
3017 let offset = scroll_position - max_row as f32;
3018
3019 if offset > 0.0 {
3020 origin.y -= Pixels(offset) * line_height;
3021 }
3022 }
3023
3024 let size = size(
3025 AvailableSpace::Definite(hitbox.size.width),
3026 AvailableSpace::MinContent,
3027 );
3028
3029 header.prepaint_as_root(origin, size, cx);
3030
3031 header
3032 }
3033
3034 #[allow(clippy::too_many_arguments)]
3035 fn layout_context_menu(
3036 &self,
3037 line_height: Pixels,
3038 text_hitbox: &Hitbox,
3039 content_origin: gpui::Point<Pixels>,
3040 start_row: DisplayRow,
3041 scroll_pixel_position: gpui::Point<Pixels>,
3042 line_layouts: &[LineWithInvisibles],
3043 newest_selection_head: DisplayPoint,
3044 gutter_overshoot: Pixels,
3045 cx: &mut WindowContext,
3046 ) {
3047 let Some(context_menu_origin) = self
3048 .editor
3049 .read(cx)
3050 .context_menu_origin(newest_selection_head)
3051 else {
3052 return;
3053 };
3054 let target_position = content_origin
3055 + match context_menu_origin {
3056 crate::ContextMenuOrigin::EditorPoint(display_point) => {
3057 let cursor_row_layout =
3058 &line_layouts[display_point.row().minus(start_row) as usize];
3059 gpui::Point {
3060 x: cmp::max(
3061 px(0.),
3062 cursor_row_layout.x_for_index(display_point.column() as usize)
3063 - scroll_pixel_position.x,
3064 ),
3065 y: cmp::max(
3066 px(0.),
3067 display_point.row().next_row().as_f32() * line_height
3068 - scroll_pixel_position.y,
3069 ),
3070 }
3071 }
3072 crate::ContextMenuOrigin::GutterIndicator(row) => {
3073 // Context menu was spawned via a click on a gutter. Ensure it's a bit closer to the indicator than just a plain first column of the
3074 // text field.
3075 gpui::Point {
3076 x: -gutter_overshoot,
3077 y: row.next_row().as_f32() * line_height - scroll_pixel_position.y,
3078 }
3079 }
3080 };
3081
3082 let viewport_bounds = Bounds::new(Default::default(), cx.viewport_size()).extend(Edges {
3083 right: -Self::SCROLLBAR_WIDTH - MENU_GAP,
3084 ..Default::default()
3085 });
3086
3087 // If the context menu's max height won't fit below, then flip it above the line and display
3088 // it in reverse order. If the available space above is less than below.
3089 let unconstrained_max_height = line_height * 12. + POPOVER_Y_PADDING;
3090 let min_height = line_height * 3. + POPOVER_Y_PADDING;
3091 let bottom_y_when_flipped = target_position.y - line_height;
3092 let available_above = bottom_y_when_flipped - text_hitbox.top();
3093 let available_below = text_hitbox.bottom() - target_position.y;
3094 let y_overflows_below = unconstrained_max_height > available_below;
3095 let mut y_is_flipped = y_overflows_below && available_above > available_below;
3096 let mut height = cmp::min(
3097 unconstrained_max_height,
3098 if y_is_flipped {
3099 available_above
3100 } else {
3101 available_below
3102 },
3103 );
3104
3105 // If less than 3 lines fit within the text bounds, instead fit within the window.
3106 if height < min_height {
3107 let available_above = bottom_y_when_flipped;
3108 let available_below = viewport_bounds.bottom() - target_position.y;
3109 if available_below > 3. * line_height {
3110 y_is_flipped = false;
3111 height = min_height;
3112 } else if available_above > 3. * line_height {
3113 y_is_flipped = true;
3114 height = min_height;
3115 } else if available_above > available_below {
3116 y_is_flipped = true;
3117 height = available_above;
3118 } else {
3119 y_is_flipped = false;
3120 height = available_below;
3121 }
3122 }
3123
3124 let max_height_in_lines = ((height - POPOVER_Y_PADDING) / line_height).floor() as u32;
3125
3126 // TODO(mgsloan): use viewport_bounds.width as a max width when rendering menu.
3127 let Some(mut menu_element) = self.editor.update(cx, |editor, cx| {
3128 editor.render_context_menu(&self.style, max_height_in_lines, cx)
3129 }) else {
3130 return;
3131 };
3132
3133 let menu_size = menu_element.layout_as_root(AvailableSpace::min_size(), cx);
3134 let menu_position = gpui::Point {
3135 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
3136 // overflow. Include space for the scrollbar.
3137 x: target_position
3138 .x
3139 .min((viewport_bounds.right() - menu_size.width).max(Pixels::ZERO)),
3140 y: if y_is_flipped {
3141 bottom_y_when_flipped - menu_size.height
3142 } else {
3143 target_position.y
3144 },
3145 };
3146 cx.defer_draw(menu_element, menu_position, 1);
3147
3148 // Layout documentation aside
3149 let menu_bounds = Bounds::new(menu_position, menu_size);
3150 let max_menu_size = size(menu_size.width, unconstrained_max_height);
3151 let max_menu_bounds = if y_is_flipped {
3152 Bounds::new(
3153 point(
3154 menu_position.x,
3155 bottom_y_when_flipped - max_menu_size.height,
3156 ),
3157 max_menu_size,
3158 )
3159 } else {
3160 Bounds::new(target_position, max_menu_size)
3161 };
3162 self.layout_context_menu_aside(
3163 text_hitbox,
3164 y_is_flipped,
3165 menu_position,
3166 menu_bounds,
3167 max_menu_bounds,
3168 unconstrained_max_height,
3169 line_height,
3170 viewport_bounds,
3171 cx,
3172 );
3173 }
3174
3175 #[allow(clippy::too_many_arguments)]
3176 fn layout_context_menu_aside(
3177 &self,
3178 text_hitbox: &Hitbox,
3179 y_is_flipped: bool,
3180 menu_position: gpui::Point<Pixels>,
3181 menu_bounds: Bounds<Pixels>,
3182 max_menu_bounds: Bounds<Pixels>,
3183 max_height: Pixels,
3184 line_height: Pixels,
3185 viewport_bounds: Bounds<Pixels>,
3186 cx: &mut WindowContext,
3187 ) {
3188 let mut extend_amount = Edges::all(MENU_GAP);
3189 // Extend to include the cursored line to avoid overlapping it.
3190 if y_is_flipped {
3191 extend_amount.bottom = line_height;
3192 } else {
3193 extend_amount.top = line_height;
3194 }
3195 let target_bounds = menu_bounds.extend(extend_amount);
3196 let max_target_bounds = max_menu_bounds.extend(extend_amount);
3197
3198 let available_within_viewport = target_bounds.space_within(&viewport_bounds);
3199 let positioned_aside = if available_within_viewport.right >= MENU_ASIDE_MIN_WIDTH {
3200 let max_width = cmp::min(
3201 available_within_viewport.right - px(1.),
3202 MENU_ASIDE_MAX_WIDTH,
3203 );
3204 let Some(mut aside) =
3205 self.render_context_menu_aside(size(max_width, max_height - POPOVER_Y_PADDING), cx)
3206 else {
3207 return;
3208 };
3209 aside.layout_as_root(AvailableSpace::min_size(), cx);
3210 let right_position = point(target_bounds.right(), menu_position.y);
3211 Some((aside, right_position))
3212 } else {
3213 let max_size = size(
3214 // TODO(mgsloan): Once the menu is bounded by viewport width the bound on viewport
3215 // won't be needed here.
3216 cmp::min(
3217 cmp::max(menu_bounds.size.width - px(2.), MENU_ASIDE_MIN_WIDTH),
3218 viewport_bounds.right(),
3219 ),
3220 cmp::min(
3221 max_height,
3222 cmp::max(
3223 available_within_viewport.top,
3224 available_within_viewport.bottom,
3225 ),
3226 ) - POPOVER_Y_PADDING,
3227 );
3228 let Some(mut aside) = self.render_context_menu_aside(max_size, cx) else {
3229 return;
3230 };
3231 let actual_size = aside.layout_as_root(AvailableSpace::min_size(), cx);
3232
3233 let top_position = point(menu_position.x, target_bounds.top() - actual_size.height);
3234 let bottom_position = point(menu_position.x, target_bounds.bottom());
3235
3236 let fit_within = |available: Edges<Pixels>, wanted: Size<Pixels>| {
3237 // Prefer to fit on the same side of the line as the menu, then on the other side of
3238 // the line.
3239 if !y_is_flipped && wanted.height < available.bottom {
3240 Some(bottom_position)
3241 } else if !y_is_flipped && wanted.height < available.top {
3242 Some(top_position)
3243 } else if y_is_flipped && wanted.height < available.top {
3244 Some(top_position)
3245 } else if y_is_flipped && wanted.height < available.bottom {
3246 Some(bottom_position)
3247 } else {
3248 None
3249 }
3250 };
3251
3252 // Prefer choosing a direction using max sizes rather than actual size for stability.
3253 let available_within_text = max_target_bounds.space_within(&text_hitbox.bounds);
3254 let wanted = size(MENU_ASIDE_MAX_WIDTH, max_height);
3255 let aside_position = fit_within(available_within_text, wanted)
3256 // Fallback: fit max size in window.
3257 .or_else(|| fit_within(max_target_bounds.space_within(&viewport_bounds), wanted))
3258 // Fallback: fit actual size in window.
3259 .or_else(|| fit_within(available_within_viewport, actual_size));
3260
3261 aside_position.map(|position| (aside, position))
3262 };
3263
3264 // Skip drawing if it doesn't fit anywhere.
3265 if let Some((aside, position)) = positioned_aside {
3266 cx.defer_draw(aside, position, 1);
3267 }
3268 }
3269
3270 fn render_context_menu_aside(
3271 &self,
3272 max_size: Size<Pixels>,
3273 cx: &mut WindowContext,
3274 ) -> Option<AnyElement> {
3275 if max_size.width < px(100.) || max_size.height < px(12.) {
3276 None
3277 } else {
3278 self.editor.update(cx, |editor, cx| {
3279 editor.render_context_menu_aside(&self.style, max_size, cx)
3280 })
3281 }
3282 }
3283
3284 #[allow(clippy::too_many_arguments)]
3285 fn layout_inline_completion_popover(
3286 &self,
3287 text_bounds: &Bounds<Pixels>,
3288 editor_snapshot: &EditorSnapshot,
3289 visible_row_range: Range<DisplayRow>,
3290 scroll_top: f32,
3291 scroll_bottom: f32,
3292 line_layouts: &[LineWithInvisibles],
3293 line_height: Pixels,
3294 scroll_pixel_position: gpui::Point<Pixels>,
3295 editor_width: Pixels,
3296 style: &EditorStyle,
3297 cx: &mut WindowContext,
3298 ) -> Option<AnyElement> {
3299 const PADDING_X: Pixels = Pixels(24.);
3300 const PADDING_Y: Pixels = Pixels(2.);
3301
3302 let active_inline_completion = self.editor.read(cx).active_inline_completion.as_ref()?;
3303
3304 match &active_inline_completion.completion {
3305 InlineCompletion::Move(target_position) => {
3306 let tab_kbd = h_flex()
3307 .px_0p5()
3308 .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
3309 .text_size(TextSize::XSmall.rems(cx))
3310 .text_color(cx.theme().colors().text.opacity(0.8))
3311 .child("tab");
3312
3313 let icon_container = div().mt(px(2.5)); // For optical alignment
3314
3315 let container_element = h_flex()
3316 .items_center()
3317 .py_0p5()
3318 .px_1()
3319 .gap_1()
3320 .bg(cx.theme().colors().editor_subheader_background)
3321 .border_1()
3322 .border_color(cx.theme().colors().text_accent.opacity(0.2))
3323 .rounded_md()
3324 .shadow_sm();
3325
3326 let target_display_point = target_position.to_display_point(editor_snapshot);
3327 if target_display_point.row().as_f32() < scroll_top {
3328 let mut element = container_element
3329 .child(tab_kbd)
3330 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3331 .child(
3332 icon_container
3333 .child(Icon::new(IconName::ArrowUp).size(IconSize::Small)),
3334 )
3335 .into_any();
3336 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3337 let offset = point((text_bounds.size.width - size.width) / 2., PADDING_Y);
3338 element.prepaint_at(text_bounds.origin + offset, cx);
3339 Some(element)
3340 } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
3341 let mut element = container_element
3342 .child(tab_kbd)
3343 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3344 .child(
3345 icon_container
3346 .child(Icon::new(IconName::ArrowDown).size(IconSize::Small)),
3347 )
3348 .into_any();
3349 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3350 let offset = point(
3351 (text_bounds.size.width - size.width) / 2.,
3352 text_bounds.size.height - size.height - PADDING_Y,
3353 );
3354 element.prepaint_at(text_bounds.origin + offset, cx);
3355 Some(element)
3356 } else {
3357 let mut element = container_element
3358 .child(tab_kbd)
3359 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3360 .into_any();
3361
3362 let target_line_end = DisplayPoint::new(
3363 target_display_point.row(),
3364 editor_snapshot.line_len(target_display_point.row()),
3365 );
3366 let origin = self.editor.update(cx, |editor, cx| {
3367 editor.display_to_pixel_point(target_line_end, editor_snapshot, cx)
3368 })?;
3369 element.prepaint_as_root(
3370 text_bounds.origin + origin + point(PADDING_X, px(0.)),
3371 AvailableSpace::min_size(),
3372 cx,
3373 );
3374 Some(element)
3375 }
3376 }
3377 InlineCompletion::Edit(edits) => {
3378 if self.editor.read(cx).has_active_completions_menu() {
3379 return None;
3380 }
3381
3382 let edit_start = edits
3383 .first()
3384 .unwrap()
3385 .0
3386 .start
3387 .to_display_point(editor_snapshot);
3388 let edit_end = edits
3389 .last()
3390 .unwrap()
3391 .0
3392 .end
3393 .to_display_point(editor_snapshot);
3394
3395 let is_visible = visible_row_range.contains(&edit_start.row())
3396 || visible_row_range.contains(&edit_end.row());
3397 if !is_visible {
3398 return None;
3399 }
3400
3401 if all_edits_insertions_or_deletions(edits, &editor_snapshot.buffer_snapshot) {
3402 return None;
3403 }
3404
3405 let crate::InlineCompletionText::Edit { text, highlights } =
3406 crate::inline_completion_edit_text(editor_snapshot, edits, false, cx)
3407 else {
3408 return None;
3409 };
3410 let line_count = text.lines().count() + 1;
3411
3412 let longest_row =
3413 editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
3414 let longest_line_width = if visible_row_range.contains(&longest_row) {
3415 line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
3416 } else {
3417 layout_line(
3418 longest_row,
3419 editor_snapshot,
3420 style,
3421 editor_width,
3422 |_| false,
3423 cx,
3424 )
3425 .width
3426 };
3427
3428 let styled_text =
3429 gpui::StyledText::new(text.clone()).with_highlights(&style.text, highlights);
3430
3431 let mut element = div()
3432 .bg(cx.theme().colors().editor_background)
3433 .border_1()
3434 .border_color(cx.theme().colors().border)
3435 .rounded_md()
3436 .px_1()
3437 .child(styled_text)
3438 .into_any();
3439
3440 let element_bounds = element.layout_as_root(AvailableSpace::min_size(), cx);
3441 let is_fully_visible =
3442 editor_width >= longest_line_width + PADDING_X + element_bounds.width;
3443
3444 let origin = if is_fully_visible {
3445 text_bounds.origin
3446 + point(
3447 longest_line_width + PADDING_X - scroll_pixel_position.x,
3448 edit_start.row().as_f32() * line_height - scroll_pixel_position.y,
3449 )
3450 } else {
3451 let target_above =
3452 DisplayRow(edit_start.row().0.saturating_sub(line_count as u32));
3453 let row_target = if visible_row_range
3454 .contains(&DisplayRow(target_above.0.saturating_sub(1)))
3455 {
3456 target_above
3457 } else {
3458 DisplayRow(edit_end.row().0 + 1)
3459 };
3460
3461 text_bounds.origin
3462 + point(
3463 -scroll_pixel_position.x,
3464 row_target.as_f32() * line_height - scroll_pixel_position.y,
3465 )
3466 };
3467
3468 element.prepaint_as_root(origin, element_bounds.into(), cx);
3469 Some(element)
3470 }
3471 }
3472 }
3473
3474 fn layout_mouse_context_menu(
3475 &self,
3476 editor_snapshot: &EditorSnapshot,
3477 visible_range: Range<DisplayRow>,
3478 content_origin: gpui::Point<Pixels>,
3479 cx: &mut WindowContext,
3480 ) -> Option<AnyElement> {
3481 let position = self.editor.update(cx, |editor, cx| {
3482 let visible_start_point = editor.display_to_pixel_point(
3483 DisplayPoint::new(visible_range.start, 0),
3484 editor_snapshot,
3485 cx,
3486 )?;
3487 let visible_end_point = editor.display_to_pixel_point(
3488 DisplayPoint::new(visible_range.end, 0),
3489 editor_snapshot,
3490 cx,
3491 )?;
3492
3493 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3494 let (source_display_point, position) = match mouse_context_menu.position {
3495 MenuPosition::PinnedToScreen(point) => (None, point),
3496 MenuPosition::PinnedToEditor { source, offset } => {
3497 let source_display_point = source.to_display_point(editor_snapshot);
3498 let source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
3499 let position = content_origin + source_point + offset;
3500 (Some(source_display_point), position)
3501 }
3502 };
3503
3504 let source_included = source_display_point.map_or(true, |source_display_point| {
3505 visible_range
3506 .to_inclusive()
3507 .contains(&source_display_point.row())
3508 });
3509 let position_included =
3510 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3511 if !source_included && !position_included {
3512 None
3513 } else {
3514 Some(position)
3515 }
3516 })?;
3517
3518 let mut element = self.editor.update(cx, |editor, _| {
3519 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3520 let context_menu = mouse_context_menu.context_menu.clone();
3521
3522 Some(
3523 deferred(
3524 anchored()
3525 .position(position)
3526 .child(context_menu)
3527 .anchor(Corner::TopLeft)
3528 .snap_to_window_with_margin(px(8.)),
3529 )
3530 .with_priority(1)
3531 .into_any(),
3532 )
3533 })?;
3534
3535 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
3536 Some(element)
3537 }
3538
3539 #[allow(clippy::too_many_arguments)]
3540 fn layout_hover_popovers(
3541 &self,
3542 snapshot: &EditorSnapshot,
3543 hitbox: &Hitbox,
3544 text_hitbox: &Hitbox,
3545 visible_display_row_range: Range<DisplayRow>,
3546 content_origin: gpui::Point<Pixels>,
3547 scroll_pixel_position: gpui::Point<Pixels>,
3548 line_layouts: &[LineWithInvisibles],
3549 line_height: Pixels,
3550 em_width: Pixels,
3551 cx: &mut WindowContext,
3552 ) {
3553 struct MeasuredHoverPopover {
3554 element: AnyElement,
3555 size: Size<Pixels>,
3556 horizontal_offset: Pixels,
3557 }
3558
3559 let max_size = size(
3560 (120. * em_width) // Default size
3561 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3562 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3563 (16. * line_height) // Default size
3564 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3565 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3566 );
3567
3568 let hover_popovers = self.editor.update(cx, |editor, cx| {
3569 editor
3570 .hover_state
3571 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3572 });
3573 let Some((position, hover_popovers)) = hover_popovers else {
3574 return;
3575 };
3576
3577 // This is safe because we check on layout whether the required row is available
3578 let hovered_row_layout =
3579 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3580
3581 // Compute Hovered Point
3582 let x =
3583 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3584 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3585 let hovered_point = content_origin + point(x, y);
3586
3587 let mut overall_height = Pixels::ZERO;
3588 let mut measured_hover_popovers = Vec::new();
3589 for mut hover_popover in hover_popovers {
3590 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
3591 let horizontal_offset =
3592 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3593
3594 overall_height += HOVER_POPOVER_GAP + size.height;
3595
3596 measured_hover_popovers.push(MeasuredHoverPopover {
3597 element: hover_popover,
3598 size,
3599 horizontal_offset,
3600 });
3601 }
3602 overall_height += HOVER_POPOVER_GAP;
3603
3604 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3605 let mut occlusion = div()
3606 .size_full()
3607 .occlude()
3608 .on_mouse_move(|_, cx| cx.stop_propagation())
3609 .into_any_element();
3610 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
3611 cx.defer_draw(occlusion, origin, 2);
3612 }
3613
3614 if hovered_point.y > overall_height {
3615 // There is enough space above. Render popovers above the hovered point
3616 let mut current_y = hovered_point.y;
3617 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3618 let size = popover.size;
3619 let popover_origin = point(
3620 hovered_point.x + popover.horizontal_offset,
3621 current_y - size.height,
3622 );
3623
3624 cx.defer_draw(popover.element, popover_origin, 2);
3625 if position != itertools::Position::Last {
3626 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3627 draw_occluder(size.width, origin, cx);
3628 }
3629
3630 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3631 }
3632 } else {
3633 // There is not enough space above. Render popovers below the hovered point
3634 let mut current_y = hovered_point.y + line_height;
3635 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3636 let size = popover.size;
3637 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3638
3639 cx.defer_draw(popover.element, popover_origin, 2);
3640 if position != itertools::Position::Last {
3641 let origin = point(popover_origin.x, popover_origin.y + size.height);
3642 draw_occluder(size.width, origin, cx);
3643 }
3644
3645 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3646 }
3647 }
3648 }
3649
3650 #[allow(clippy::too_many_arguments)]
3651 fn layout_signature_help(
3652 &self,
3653 hitbox: &Hitbox,
3654 content_origin: gpui::Point<Pixels>,
3655 scroll_pixel_position: gpui::Point<Pixels>,
3656 newest_selection_head: Option<DisplayPoint>,
3657 start_row: DisplayRow,
3658 line_layouts: &[LineWithInvisibles],
3659 line_height: Pixels,
3660 em_width: Pixels,
3661 cx: &mut WindowContext,
3662 ) {
3663 if !self.editor.focus_handle(cx).is_focused(cx) {
3664 return;
3665 }
3666 let Some(newest_selection_head) = newest_selection_head else {
3667 return;
3668 };
3669 let selection_row = newest_selection_head.row();
3670 if selection_row < start_row {
3671 return;
3672 }
3673 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
3674 else {
3675 return;
3676 };
3677
3678 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
3679 - scroll_pixel_position.x
3680 + content_origin.x;
3681 let start_y =
3682 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
3683
3684 let max_size = size(
3685 (120. * em_width) // Default size
3686 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3687 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3688 (16. * line_height) // Default size
3689 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3690 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3691 );
3692
3693 let maybe_element = self.editor.update(cx, |editor, cx| {
3694 if let Some(popover) = editor.signature_help_state.popover_mut() {
3695 let element = popover.render(
3696 &self.style,
3697 max_size,
3698 editor.workspace.as_ref().map(|(w, _)| w.clone()),
3699 cx,
3700 );
3701 Some(element)
3702 } else {
3703 None
3704 }
3705 });
3706 if let Some(mut element) = maybe_element {
3707 let window_size = cx.viewport_size();
3708 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
3709 let mut point = point(start_x, start_y - size.height);
3710
3711 // Adjusting to ensure the popover does not overflow in the X-axis direction.
3712 if point.x + size.width >= window_size.width {
3713 point.x = window_size.width - size.width;
3714 }
3715
3716 cx.defer_draw(element, point, 1)
3717 }
3718 }
3719
3720 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
3721 cx.paint_layer(layout.hitbox.bounds, |cx| {
3722 let scroll_top = layout.position_map.snapshot.scroll_position().y;
3723 let gutter_bg = cx.theme().colors().editor_gutter_background;
3724 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
3725 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
3726
3727 if let EditorMode::Full = layout.mode {
3728 let mut active_rows = layout.active_rows.iter().peekable();
3729 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
3730 let mut end_row = start_row.0;
3731 while active_rows
3732 .peek()
3733 .map_or(false, |(active_row, has_selection)| {
3734 active_row.0 == end_row + 1
3735 && *has_selection == contains_non_empty_selection
3736 })
3737 {
3738 active_rows.next().unwrap();
3739 end_row += 1;
3740 }
3741
3742 if !contains_non_empty_selection {
3743 let highlight_h_range =
3744 match layout.position_map.snapshot.current_line_highlight {
3745 CurrentLineHighlight::Gutter => Some(Range {
3746 start: layout.hitbox.left(),
3747 end: layout.gutter_hitbox.right(),
3748 }),
3749 CurrentLineHighlight::Line => Some(Range {
3750 start: layout.text_hitbox.bounds.left(),
3751 end: layout.text_hitbox.bounds.right(),
3752 }),
3753 CurrentLineHighlight::All => Some(Range {
3754 start: layout.hitbox.left(),
3755 end: layout.hitbox.right(),
3756 }),
3757 CurrentLineHighlight::None => None,
3758 };
3759 if let Some(range) = highlight_h_range {
3760 let active_line_bg = cx.theme().colors().editor_active_line_background;
3761 let bounds = Bounds {
3762 origin: point(
3763 range.start,
3764 layout.hitbox.origin.y
3765 + (start_row.as_f32() - scroll_top)
3766 * layout.position_map.line_height,
3767 ),
3768 size: size(
3769 range.end - range.start,
3770 layout.position_map.line_height
3771 * (end_row - start_row.0 + 1) as f32,
3772 ),
3773 };
3774 cx.paint_quad(fill(bounds, active_line_bg));
3775 }
3776 }
3777 }
3778
3779 let mut paint_highlight =
3780 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3781 let origin = point(
3782 layout.hitbox.origin.x,
3783 layout.hitbox.origin.y
3784 + (highlight_row_start.as_f32() - scroll_top)
3785 * layout.position_map.line_height,
3786 );
3787 let size = size(
3788 layout.hitbox.size.width,
3789 layout.position_map.line_height
3790 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3791 );
3792 cx.paint_quad(fill(Bounds { origin, size }, color));
3793 };
3794
3795 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3796 for (&new_row, &new_color) in &layout.highlighted_rows {
3797 match &mut current_paint {
3798 Some((current_color, current_range)) => {
3799 let current_color = *current_color;
3800 let new_range_started = current_color != new_color
3801 || current_range.end.next_row() != new_row;
3802 if new_range_started {
3803 paint_highlight(
3804 current_range.start,
3805 current_range.end,
3806 current_color,
3807 );
3808 current_paint = Some((new_color, new_row..new_row));
3809 continue;
3810 } else {
3811 current_range.end = current_range.end.next_row();
3812 }
3813 }
3814 None => current_paint = Some((new_color, new_row..new_row)),
3815 };
3816 }
3817 if let Some((color, range)) = current_paint {
3818 paint_highlight(range.start, range.end, color);
3819 }
3820
3821 let scroll_left =
3822 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3823
3824 for (wrap_position, active) in layout.wrap_guides.iter() {
3825 let x = (layout.text_hitbox.origin.x
3826 + *wrap_position
3827 + layout.position_map.em_width / 2.)
3828 - scroll_left;
3829
3830 let show_scrollbars = {
3831 let (scrollbar_x, scrollbar_y) = &layout.scrollbars_layout.as_xy();
3832
3833 scrollbar_x.as_ref().map_or(false, |sx| sx.visible)
3834 || scrollbar_y.as_ref().map_or(false, |sy| sy.visible)
3835 };
3836
3837 if x < layout.text_hitbox.origin.x
3838 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3839 {
3840 continue;
3841 }
3842
3843 let color = if *active {
3844 cx.theme().colors().editor_active_wrap_guide
3845 } else {
3846 cx.theme().colors().editor_wrap_guide
3847 };
3848 cx.paint_quad(fill(
3849 Bounds {
3850 origin: point(x, layout.text_hitbox.origin.y),
3851 size: size(px(1.), layout.text_hitbox.size.height),
3852 },
3853 color,
3854 ));
3855 }
3856 }
3857 })
3858 }
3859
3860 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3861 let Some(indent_guides) = &layout.indent_guides else {
3862 return;
3863 };
3864
3865 let faded_color = |color: Hsla, alpha: f32| {
3866 let mut faded = color;
3867 faded.a = alpha;
3868 faded
3869 };
3870
3871 for indent_guide in indent_guides {
3872 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3873 let settings = indent_guide.settings;
3874
3875 // TODO fixed for now, expose them through themes later
3876 const INDENT_AWARE_ALPHA: f32 = 0.2;
3877 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3878 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3879 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3880
3881 let line_color = match (settings.coloring, indent_guide.active) {
3882 (IndentGuideColoring::Disabled, _) => None,
3883 (IndentGuideColoring::Fixed, false) => {
3884 Some(cx.theme().colors().editor_indent_guide)
3885 }
3886 (IndentGuideColoring::Fixed, true) => {
3887 Some(cx.theme().colors().editor_indent_guide_active)
3888 }
3889 (IndentGuideColoring::IndentAware, false) => {
3890 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3891 }
3892 (IndentGuideColoring::IndentAware, true) => {
3893 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3894 }
3895 };
3896
3897 let background_color = match (settings.background_coloring, indent_guide.active) {
3898 (IndentGuideBackgroundColoring::Disabled, _) => None,
3899 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3900 indent_accent_colors,
3901 INDENT_AWARE_BACKGROUND_ALPHA,
3902 )),
3903 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3904 indent_accent_colors,
3905 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3906 )),
3907 };
3908
3909 let requested_line_width = if indent_guide.active {
3910 settings.active_line_width
3911 } else {
3912 settings.line_width
3913 }
3914 .clamp(1, 10);
3915 let mut line_indicator_width = 0.;
3916 if let Some(color) = line_color {
3917 cx.paint_quad(fill(
3918 Bounds {
3919 origin: indent_guide.origin,
3920 size: size(px(requested_line_width as f32), indent_guide.length),
3921 },
3922 color,
3923 ));
3924 line_indicator_width = requested_line_width as f32;
3925 }
3926
3927 if let Some(color) = background_color {
3928 let width = indent_guide.single_indent_width - px(line_indicator_width);
3929 cx.paint_quad(fill(
3930 Bounds {
3931 origin: point(
3932 indent_guide.origin.x + px(line_indicator_width),
3933 indent_guide.origin.y,
3934 ),
3935 size: size(width, indent_guide.length),
3936 },
3937 color,
3938 ));
3939 }
3940 }
3941 }
3942
3943 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3944 let is_singleton = self.editor.read(cx).is_singleton(cx);
3945
3946 let line_height = layout.position_map.line_height;
3947 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3948
3949 for (_, (line, hitbox)) in layout.line_numbers.iter() {
3950 let Some(hitbox) = hitbox else {
3951 continue;
3952 };
3953 let color = if !is_singleton && hitbox.is_hovered(cx) {
3954 cx.theme().colors().editor_active_line_number
3955 } else {
3956 cx.theme().colors().editor_line_number
3957 };
3958 let Some(line) = self
3959 .shape_line_number(line.text.clone(), color, cx)
3960 .log_err()
3961 else {
3962 continue;
3963 };
3964 let Some(()) = line.paint(hitbox.origin, line_height, cx).log_err() else {
3965 continue;
3966 };
3967 // In singleton buffers, we select corresponding lines on the line number click, so use | -like cursor.
3968 // In multi buffers, we open file at the line number clicked, so use a pointing hand cursor.
3969 if is_singleton {
3970 cx.set_cursor_style(CursorStyle::IBeam, hitbox);
3971 } else {
3972 cx.set_cursor_style(CursorStyle::PointingHand, hitbox);
3973 }
3974 }
3975 }
3976
3977 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3978 if layout.display_hunks.is_empty() {
3979 return;
3980 }
3981
3982 let line_height = layout.position_map.line_height;
3983 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3984 for (hunk, hitbox) in &layout.display_hunks {
3985 let hunk_to_paint = match hunk {
3986 DisplayDiffHunk::Folded { .. } => {
3987 let hunk_bounds = Self::diff_hunk_bounds(
3988 &layout.position_map.snapshot,
3989 line_height,
3990 layout.gutter_hitbox.bounds,
3991 hunk,
3992 );
3993 Some((
3994 hunk_bounds,
3995 cx.theme().status().modified,
3996 Corners::all(px(0.)),
3997 ))
3998 }
3999 DisplayDiffHunk::Unfolded { status, .. } => {
4000 hitbox.as_ref().map(|hunk_hitbox| match status {
4001 DiffHunkStatus::Added => (
4002 hunk_hitbox.bounds,
4003 cx.theme().status().created,
4004 Corners::all(px(0.)),
4005 ),
4006 DiffHunkStatus::Modified => (
4007 hunk_hitbox.bounds,
4008 cx.theme().status().modified,
4009 Corners::all(px(0.)),
4010 ),
4011 DiffHunkStatus::Removed => (
4012 Bounds::new(
4013 point(
4014 hunk_hitbox.origin.x - hunk_hitbox.size.width,
4015 hunk_hitbox.origin.y,
4016 ),
4017 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
4018 ),
4019 cx.theme().status().deleted,
4020 Corners::all(1. * line_height),
4021 ),
4022 })
4023 }
4024 };
4025
4026 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
4027 cx.paint_quad(quad(
4028 hunk_bounds,
4029 corner_radii,
4030 background_color,
4031 Edges::default(),
4032 transparent_black(),
4033 ));
4034 }
4035 }
4036 });
4037 }
4038
4039 pub(super) fn diff_hunk_bounds(
4040 snapshot: &EditorSnapshot,
4041 line_height: Pixels,
4042 gutter_bounds: Bounds<Pixels>,
4043 hunk: &DisplayDiffHunk,
4044 ) -> Bounds<Pixels> {
4045 let scroll_position = snapshot.scroll_position();
4046 let scroll_top = scroll_position.y * line_height;
4047
4048 match hunk {
4049 DisplayDiffHunk::Folded { display_row, .. } => {
4050 let start_y = display_row.as_f32() * line_height - scroll_top;
4051 let end_y = start_y + line_height;
4052
4053 let width = Self::diff_hunk_strip_width(line_height);
4054 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4055 let highlight_size = size(width, end_y - start_y);
4056 Bounds::new(highlight_origin, highlight_size)
4057 }
4058 DisplayDiffHunk::Unfolded {
4059 display_row_range,
4060 status,
4061 ..
4062 } => match status {
4063 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
4064 let start_row = display_row_range.start;
4065 let end_row = display_row_range.end;
4066 // If we're in a multibuffer, row range span might include an
4067 // excerpt header, so if we were to draw the marker straight away,
4068 // the hunk might include the rows of that header.
4069 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
4070 // Instead, we simply check whether the range we're dealing with includes
4071 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
4072 let end_row_in_current_excerpt = snapshot
4073 .blocks_in_range(start_row..end_row)
4074 .find_map(|(start_row, block)| {
4075 if matches!(block, Block::ExcerptBoundary { .. }) {
4076 Some(start_row)
4077 } else {
4078 None
4079 }
4080 })
4081 .unwrap_or(end_row);
4082
4083 let start_y = start_row.as_f32() * line_height - scroll_top;
4084 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
4085
4086 let width = Self::diff_hunk_strip_width(line_height);
4087 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4088 let highlight_size = size(width, end_y - start_y);
4089 Bounds::new(highlight_origin, highlight_size)
4090 }
4091 DiffHunkStatus::Removed => {
4092 let row = display_row_range.start;
4093
4094 let offset = line_height / 2.;
4095 let start_y = row.as_f32() * line_height - offset - scroll_top;
4096 let end_y = start_y + line_height;
4097
4098 let width = (0.35 * line_height).floor();
4099 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
4100 let highlight_size = size(width, end_y - start_y);
4101 Bounds::new(highlight_origin, highlight_size)
4102 }
4103 },
4104 }
4105 }
4106
4107 /// Returns the width of the diff strip that will be displayed in the gutter.
4108 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
4109 // We floor the value to prevent pixel rounding.
4110 (0.275 * line_height).floor()
4111 }
4112
4113 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4114 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4115 cx.with_element_namespace("crease_toggles", |cx| {
4116 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
4117 crease_toggle.paint(cx);
4118 }
4119 });
4120
4121 for test_indicator in layout.test_indicators.iter_mut() {
4122 test_indicator.paint(cx);
4123 }
4124
4125 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
4126 indicator.paint(cx);
4127 }
4128 });
4129 }
4130
4131 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4132 for (_, hunk_hitbox) in &layout.display_hunks {
4133 if let Some(hunk_hitbox) = hunk_hitbox {
4134 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
4135 }
4136 }
4137
4138 let show_git_gutter = layout
4139 .position_map
4140 .snapshot
4141 .show_git_diff_gutter
4142 .unwrap_or_else(|| {
4143 matches!(
4144 ProjectSettings::get_global(cx).git.git_gutter,
4145 Some(GitGutterSetting::TrackedFiles)
4146 )
4147 });
4148 if show_git_gutter {
4149 Self::paint_diff_hunks(layout, cx)
4150 }
4151
4152 let highlight_width = 0.275 * layout.position_map.line_height;
4153 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
4154 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4155 for (range, color) in &layout.highlighted_gutter_ranges {
4156 let start_row = if range.start.row() < layout.visible_display_row_range.start {
4157 layout.visible_display_row_range.start - DisplayRow(1)
4158 } else {
4159 range.start.row()
4160 };
4161 let end_row = if range.end.row() > layout.visible_display_row_range.end {
4162 layout.visible_display_row_range.end + DisplayRow(1)
4163 } else {
4164 range.end.row()
4165 };
4166
4167 let start_y = layout.gutter_hitbox.top()
4168 + start_row.0 as f32 * layout.position_map.line_height
4169 - layout.position_map.scroll_pixel_position.y;
4170 let end_y = layout.gutter_hitbox.top()
4171 + (end_row.0 + 1) as f32 * layout.position_map.line_height
4172 - layout.position_map.scroll_pixel_position.y;
4173 let bounds = Bounds::from_corners(
4174 point(layout.gutter_hitbox.left(), start_y),
4175 point(layout.gutter_hitbox.left() + highlight_width, end_y),
4176 );
4177 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
4178 }
4179 });
4180 }
4181
4182 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4183 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
4184 return;
4185 };
4186
4187 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
4188 for mut blame_element in blamed_display_rows.into_iter() {
4189 blame_element.paint(cx);
4190 }
4191 })
4192 }
4193
4194 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4195 cx.with_content_mask(
4196 Some(ContentMask {
4197 bounds: layout.text_hitbox.bounds,
4198 }),
4199 |cx| {
4200 let cursor_style = if self
4201 .editor
4202 .read(cx)
4203 .hovered_link_state
4204 .as_ref()
4205 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
4206 {
4207 CursorStyle::PointingHand
4208 } else {
4209 CursorStyle::IBeam
4210 };
4211 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
4212
4213 let invisible_display_ranges = self.paint_highlights(layout, cx);
4214 self.paint_lines(&invisible_display_ranges, layout, cx);
4215 self.paint_redactions(layout, cx);
4216 self.paint_cursors(layout, cx);
4217 self.paint_inline_blame(layout, cx);
4218 cx.with_element_namespace("crease_trailers", |cx| {
4219 for trailer in layout.crease_trailers.iter_mut().flatten() {
4220 trailer.element.paint(cx);
4221 }
4222 });
4223 },
4224 )
4225 }
4226
4227 fn paint_highlights(
4228 &mut self,
4229 layout: &mut EditorLayout,
4230 cx: &mut WindowContext,
4231 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
4232 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4233 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
4234 let line_end_overshoot = 0.15 * layout.position_map.line_height;
4235 for (range, color) in &layout.highlighted_ranges {
4236 self.paint_highlighted_range(
4237 range.clone(),
4238 *color,
4239 Pixels::ZERO,
4240 line_end_overshoot,
4241 layout,
4242 cx,
4243 );
4244 }
4245
4246 let corner_radius = 0.15 * layout.position_map.line_height;
4247
4248 for (player_color, selections) in &layout.selections {
4249 for selection in selections.iter() {
4250 self.paint_highlighted_range(
4251 selection.range.clone(),
4252 player_color.selection,
4253 corner_radius,
4254 corner_radius * 2.,
4255 layout,
4256 cx,
4257 );
4258
4259 if selection.is_local && !selection.range.is_empty() {
4260 invisible_display_ranges.push(selection.range.clone());
4261 }
4262 }
4263 }
4264 invisible_display_ranges
4265 })
4266 }
4267
4268 fn paint_lines(
4269 &mut self,
4270 invisible_display_ranges: &[Range<DisplayPoint>],
4271 layout: &mut EditorLayout,
4272 cx: &mut WindowContext,
4273 ) {
4274 let whitespace_setting = self
4275 .editor
4276 .read(cx)
4277 .buffer
4278 .read(cx)
4279 .settings_at(0, cx)
4280 .show_whitespaces;
4281
4282 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4283 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4284 line_with_invisibles.draw(
4285 layout,
4286 row,
4287 layout.content_origin,
4288 whitespace_setting,
4289 invisible_display_ranges,
4290 cx,
4291 )
4292 }
4293
4294 for line_element in &mut layout.line_elements {
4295 line_element.paint(cx);
4296 }
4297 }
4298
4299 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4300 if layout.redacted_ranges.is_empty() {
4301 return;
4302 }
4303
4304 let line_end_overshoot = layout.line_end_overshoot();
4305
4306 // A softer than perfect black
4307 let redaction_color = gpui::rgb(0x0e1111);
4308
4309 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4310 for range in layout.redacted_ranges.iter() {
4311 self.paint_highlighted_range(
4312 range.clone(),
4313 redaction_color.into(),
4314 Pixels::ZERO,
4315 line_end_overshoot,
4316 layout,
4317 cx,
4318 );
4319 }
4320 });
4321 }
4322
4323 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4324 for cursor in &mut layout.visible_cursors {
4325 cursor.paint(layout.content_origin, cx);
4326 }
4327 }
4328
4329 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4330 let (scrollbar_x, scrollbar_y) = layout.scrollbars_layout.as_xy();
4331
4332 if let Some(scrollbar_layout) = scrollbar_x {
4333 let hitbox = scrollbar_layout.hitbox.clone();
4334 let text_unit_size = scrollbar_layout.text_unit_size;
4335 let visible_range = scrollbar_layout.visible_range.clone();
4336 let thumb_bounds = scrollbar_layout.thumb_bounds();
4337
4338 if scrollbar_layout.visible {
4339 cx.paint_layer(hitbox.bounds, |cx| {
4340 cx.paint_quad(quad(
4341 hitbox.bounds,
4342 Corners::default(),
4343 cx.theme().colors().scrollbar_track_background,
4344 Edges {
4345 top: Pixels::ZERO,
4346 right: Pixels::ZERO,
4347 bottom: Pixels::ZERO,
4348 left: Pixels::ZERO,
4349 },
4350 cx.theme().colors().scrollbar_track_border,
4351 ));
4352
4353 cx.paint_quad(quad(
4354 thumb_bounds,
4355 Corners::default(),
4356 cx.theme().colors().scrollbar_thumb_background,
4357 Edges {
4358 top: Pixels::ZERO,
4359 right: Pixels::ZERO,
4360 bottom: Pixels::ZERO,
4361 left: ScrollbarLayout::BORDER_WIDTH,
4362 },
4363 cx.theme().colors().scrollbar_thumb_border,
4364 ));
4365 })
4366 }
4367
4368 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4369
4370 cx.on_mouse_event({
4371 let editor = self.editor.clone();
4372
4373 // there may be a way to avoid this clone
4374 let hitbox = hitbox.clone();
4375
4376 let mut mouse_position = cx.mouse_position();
4377 move |event: &MouseMoveEvent, phase, cx| {
4378 if phase == DispatchPhase::Capture {
4379 return;
4380 }
4381
4382 editor.update(cx, |editor, cx| {
4383 if event.pressed_button == Some(MouseButton::Left)
4384 && editor
4385 .scroll_manager
4386 .is_dragging_scrollbar(Axis::Horizontal)
4387 {
4388 let x = mouse_position.x;
4389 let new_x = event.position.x;
4390 if (hitbox.left()..hitbox.right()).contains(&x) {
4391 let mut position = editor.scroll_position(cx);
4392
4393 position.x += (new_x - x) / text_unit_size;
4394 if position.x < 0.0 {
4395 position.x = 0.0;
4396 }
4397 editor.set_scroll_position(position, cx);
4398 }
4399
4400 cx.stop_propagation();
4401 } else {
4402 editor.scroll_manager.set_is_dragging_scrollbar(
4403 Axis::Horizontal,
4404 false,
4405 cx,
4406 );
4407
4408 if hitbox.is_hovered(cx) {
4409 editor.scroll_manager.show_scrollbar(cx);
4410 }
4411 }
4412 mouse_position = event.position;
4413 })
4414 }
4415 });
4416
4417 if self
4418 .editor
4419 .read(cx)
4420 .scroll_manager
4421 .is_dragging_scrollbar(Axis::Horizontal)
4422 {
4423 cx.on_mouse_event({
4424 let editor = self.editor.clone();
4425 move |_: &MouseUpEvent, phase, cx| {
4426 if phase == DispatchPhase::Capture {
4427 return;
4428 }
4429
4430 editor.update(cx, |editor, cx| {
4431 editor.scroll_manager.set_is_dragging_scrollbar(
4432 Axis::Horizontal,
4433 false,
4434 cx,
4435 );
4436 cx.stop_propagation();
4437 });
4438 }
4439 });
4440 } else {
4441 cx.on_mouse_event({
4442 let editor = self.editor.clone();
4443
4444 move |event: &MouseDownEvent, phase, cx| {
4445 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4446 return;
4447 }
4448
4449 editor.update(cx, |editor, cx| {
4450 editor.scroll_manager.set_is_dragging_scrollbar(
4451 Axis::Horizontal,
4452 true,
4453 cx,
4454 );
4455
4456 let x = event.position.x;
4457
4458 if x < thumb_bounds.left() || thumb_bounds.right() < x {
4459 let center_row =
4460 ((x - hitbox.left()) / text_unit_size).round() as u32;
4461 let top_row = center_row.saturating_sub(
4462 (visible_range.end - visible_range.start) as u32 / 2,
4463 );
4464
4465 let mut position = editor.scroll_position(cx);
4466 position.x = top_row as f32;
4467
4468 editor.set_scroll_position(position, cx);
4469 } else {
4470 editor.scroll_manager.show_scrollbar(cx);
4471 }
4472
4473 cx.stop_propagation();
4474 });
4475 }
4476 });
4477 }
4478 }
4479
4480 if let Some(scrollbar_layout) = scrollbar_y {
4481 let hitbox = scrollbar_layout.hitbox.clone();
4482 let text_unit_size = scrollbar_layout.text_unit_size;
4483 let visible_range = scrollbar_layout.visible_range.clone();
4484 let thumb_bounds = scrollbar_layout.thumb_bounds();
4485
4486 if scrollbar_layout.visible {
4487 cx.paint_layer(hitbox.bounds, |cx| {
4488 cx.paint_quad(quad(
4489 hitbox.bounds,
4490 Corners::default(),
4491 cx.theme().colors().scrollbar_track_background,
4492 Edges {
4493 top: Pixels::ZERO,
4494 right: Pixels::ZERO,
4495 bottom: Pixels::ZERO,
4496 left: ScrollbarLayout::BORDER_WIDTH,
4497 },
4498 cx.theme().colors().scrollbar_track_border,
4499 ));
4500
4501 let fast_markers =
4502 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4503 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
4504 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, cx);
4505
4506 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4507 for marker in markers.iter().chain(&fast_markers) {
4508 let mut marker = marker.clone();
4509 marker.bounds.origin += hitbox.origin;
4510 cx.paint_quad(marker);
4511 }
4512
4513 cx.paint_quad(quad(
4514 thumb_bounds,
4515 Corners::default(),
4516 cx.theme().colors().scrollbar_thumb_background,
4517 Edges {
4518 top: Pixels::ZERO,
4519 right: Pixels::ZERO,
4520 bottom: Pixels::ZERO,
4521 left: ScrollbarLayout::BORDER_WIDTH,
4522 },
4523 cx.theme().colors().scrollbar_thumb_border,
4524 ));
4525 });
4526 }
4527
4528 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4529
4530 cx.on_mouse_event({
4531 let editor = self.editor.clone();
4532
4533 let hitbox = hitbox.clone();
4534
4535 let mut mouse_position = cx.mouse_position();
4536 move |event: &MouseMoveEvent, phase, cx| {
4537 if phase == DispatchPhase::Capture {
4538 return;
4539 }
4540
4541 editor.update(cx, |editor, cx| {
4542 if event.pressed_button == Some(MouseButton::Left)
4543 && editor.scroll_manager.is_dragging_scrollbar(Axis::Vertical)
4544 {
4545 let y = mouse_position.y;
4546 let new_y = event.position.y;
4547 if (hitbox.top()..hitbox.bottom()).contains(&y) {
4548 let mut position = editor.scroll_position(cx);
4549 position.y += (new_y - y) / text_unit_size;
4550 if position.y < 0.0 {
4551 position.y = 0.0;
4552 }
4553 editor.set_scroll_position(position, cx);
4554 }
4555 } else {
4556 editor.scroll_manager.set_is_dragging_scrollbar(
4557 Axis::Vertical,
4558 false,
4559 cx,
4560 );
4561
4562 if hitbox.is_hovered(cx) {
4563 editor.scroll_manager.show_scrollbar(cx);
4564 }
4565 }
4566 mouse_position = event.position;
4567 })
4568 }
4569 });
4570
4571 if self
4572 .editor
4573 .read(cx)
4574 .scroll_manager
4575 .is_dragging_scrollbar(Axis::Vertical)
4576 {
4577 cx.on_mouse_event({
4578 let editor = self.editor.clone();
4579 move |_: &MouseUpEvent, phase, cx| {
4580 if phase == DispatchPhase::Capture {
4581 return;
4582 }
4583
4584 editor.update(cx, |editor, cx| {
4585 editor.scroll_manager.set_is_dragging_scrollbar(
4586 Axis::Vertical,
4587 false,
4588 cx,
4589 );
4590 cx.stop_propagation();
4591 });
4592 }
4593 });
4594 } else {
4595 cx.on_mouse_event({
4596 let editor = self.editor.clone();
4597
4598 move |event: &MouseDownEvent, phase, cx| {
4599 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4600 return;
4601 }
4602
4603 editor.update(cx, |editor, cx| {
4604 editor.scroll_manager.set_is_dragging_scrollbar(
4605 Axis::Vertical,
4606 true,
4607 cx,
4608 );
4609
4610 let y = event.position.y;
4611 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
4612 let center_row =
4613 ((y - hitbox.top()) / text_unit_size).round() as u32;
4614 let top_row = center_row.saturating_sub(
4615 (visible_range.end - visible_range.start) as u32 / 2,
4616 );
4617 let mut position = editor.scroll_position(cx);
4618 position.y = top_row as f32;
4619 editor.set_scroll_position(position, cx);
4620 } else {
4621 editor.scroll_manager.show_scrollbar(cx);
4622 }
4623
4624 cx.stop_propagation();
4625 });
4626 }
4627 });
4628 }
4629 }
4630 }
4631
4632 fn collect_fast_scrollbar_markers(
4633 &self,
4634 layout: &EditorLayout,
4635 scrollbar_layout: &ScrollbarLayout,
4636 cx: &mut WindowContext,
4637 ) -> Vec<PaintQuad> {
4638 const LIMIT: usize = 100;
4639 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
4640 return vec![];
4641 }
4642 let cursor_ranges = layout
4643 .cursors
4644 .iter()
4645 .map(|(point, color)| ColoredRange {
4646 start: point.row(),
4647 end: point.row(),
4648 color: *color,
4649 })
4650 .collect_vec();
4651 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
4652 }
4653
4654 fn refresh_slow_scrollbar_markers(
4655 &self,
4656 layout: &EditorLayout,
4657 scrollbar_layout: &ScrollbarLayout,
4658 cx: &mut WindowContext,
4659 ) {
4660 self.editor.update(cx, |editor, cx| {
4661 if !editor.is_singleton(cx)
4662 || !editor
4663 .scrollbar_marker_state
4664 .should_refresh(scrollbar_layout.hitbox.size)
4665 {
4666 return;
4667 }
4668
4669 let scrollbar_layout = scrollbar_layout.clone();
4670 let background_highlights = editor.background_highlights.clone();
4671 let snapshot = layout.position_map.snapshot.clone();
4672 let theme = cx.theme().clone();
4673 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
4674
4675 editor.scrollbar_marker_state.dirty = false;
4676 editor.scrollbar_marker_state.pending_refresh =
4677 Some(cx.spawn(|editor, mut cx| async move {
4678 let scrollbar_size = scrollbar_layout.hitbox.size;
4679 let scrollbar_markers = cx
4680 .background_executor()
4681 .spawn(async move {
4682 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
4683 let mut marker_quads = Vec::new();
4684 if scrollbar_settings.git_diff {
4685 let marker_row_ranges = snapshot
4686 .diff_map
4687 .diff_hunks(&snapshot.buffer_snapshot)
4688 .map(|hunk| {
4689 let start_display_row =
4690 MultiBufferPoint::new(hunk.row_range.start.0, 0)
4691 .to_display_point(&snapshot.display_snapshot)
4692 .row();
4693 let mut end_display_row =
4694 MultiBufferPoint::new(hunk.row_range.end.0, 0)
4695 .to_display_point(&snapshot.display_snapshot)
4696 .row();
4697 if end_display_row != start_display_row {
4698 end_display_row.0 -= 1;
4699 }
4700 let color = match hunk_status(&hunk) {
4701 DiffHunkStatus::Added => theme.status().created,
4702 DiffHunkStatus::Modified => theme.status().modified,
4703 DiffHunkStatus::Removed => theme.status().deleted,
4704 };
4705 ColoredRange {
4706 start: start_display_row,
4707 end: end_display_row,
4708 color,
4709 }
4710 });
4711
4712 marker_quads.extend(
4713 scrollbar_layout
4714 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
4715 );
4716 }
4717
4718 for (background_highlight_id, (_, background_ranges)) in
4719 background_highlights.iter()
4720 {
4721 let is_search_highlights = *background_highlight_id
4722 == TypeId::of::<BufferSearchHighlights>();
4723 let is_symbol_occurrences = *background_highlight_id
4724 == TypeId::of::<DocumentHighlightRead>()
4725 || *background_highlight_id
4726 == TypeId::of::<DocumentHighlightWrite>();
4727 if (is_search_highlights && scrollbar_settings.search_results)
4728 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
4729 {
4730 let mut color = theme.status().info;
4731 if is_symbol_occurrences {
4732 color.fade_out(0.5);
4733 }
4734 let marker_row_ranges = background_ranges.iter().map(|range| {
4735 let display_start = range
4736 .start
4737 .to_display_point(&snapshot.display_snapshot);
4738 let display_end =
4739 range.end.to_display_point(&snapshot.display_snapshot);
4740 ColoredRange {
4741 start: display_start.row(),
4742 end: display_end.row(),
4743 color,
4744 }
4745 });
4746 marker_quads.extend(
4747 scrollbar_layout
4748 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
4749 );
4750 }
4751 }
4752
4753 if scrollbar_settings.diagnostics != ScrollbarDiagnostics::None {
4754 let diagnostics = snapshot
4755 .buffer_snapshot
4756 .diagnostics_in_range(Point::zero()..max_point, false)
4757 .map(|DiagnosticEntry { diagnostic, range }| DiagnosticEntry {
4758 diagnostic,
4759 range: range.to_point(&snapshot.buffer_snapshot),
4760 })
4761 // Don't show diagnostics the user doesn't care about
4762 .filter(|diagnostic| {
4763 match (
4764 scrollbar_settings.diagnostics,
4765 diagnostic.diagnostic.severity,
4766 ) {
4767 (ScrollbarDiagnostics::All, _) => true,
4768 (
4769 ScrollbarDiagnostics::Error,
4770 DiagnosticSeverity::ERROR,
4771 ) => true,
4772 (
4773 ScrollbarDiagnostics::Warning,
4774 DiagnosticSeverity::ERROR
4775 | DiagnosticSeverity::WARNING,
4776 ) => true,
4777 (
4778 ScrollbarDiagnostics::Information,
4779 DiagnosticSeverity::ERROR
4780 | DiagnosticSeverity::WARNING
4781 | DiagnosticSeverity::INFORMATION,
4782 ) => true,
4783 (_, _) => false,
4784 }
4785 })
4786 // We want to sort by severity, in order to paint the most severe diagnostics last.
4787 .sorted_by_key(|diagnostic| {
4788 std::cmp::Reverse(diagnostic.diagnostic.severity)
4789 });
4790
4791 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
4792 let start_display = diagnostic
4793 .range
4794 .start
4795 .to_display_point(&snapshot.display_snapshot);
4796 let end_display = diagnostic
4797 .range
4798 .end
4799 .to_display_point(&snapshot.display_snapshot);
4800 let color = match diagnostic.diagnostic.severity {
4801 DiagnosticSeverity::ERROR => theme.status().error,
4802 DiagnosticSeverity::WARNING => theme.status().warning,
4803 DiagnosticSeverity::INFORMATION => theme.status().info,
4804 _ => theme.status().hint,
4805 };
4806 ColoredRange {
4807 start: start_display.row(),
4808 end: end_display.row(),
4809 color,
4810 }
4811 });
4812 marker_quads.extend(
4813 scrollbar_layout
4814 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
4815 );
4816 }
4817
4818 Arc::from(marker_quads)
4819 })
4820 .await;
4821
4822 editor.update(&mut cx, |editor, cx| {
4823 editor.scrollbar_marker_state.markers = scrollbar_markers;
4824 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
4825 editor.scrollbar_marker_state.pending_refresh = None;
4826 cx.notify();
4827 })?;
4828
4829 Ok(())
4830 }));
4831 });
4832 }
4833
4834 #[allow(clippy::too_many_arguments)]
4835 fn paint_highlighted_range(
4836 &self,
4837 range: Range<DisplayPoint>,
4838 color: Hsla,
4839 corner_radius: Pixels,
4840 line_end_overshoot: Pixels,
4841 layout: &EditorLayout,
4842 cx: &mut WindowContext,
4843 ) {
4844 let start_row = layout.visible_display_row_range.start;
4845 let end_row = layout.visible_display_row_range.end;
4846 if range.start != range.end {
4847 let row_range = if range.end.column() == 0 {
4848 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
4849 } else {
4850 cmp::max(range.start.row(), start_row)
4851 ..cmp::min(range.end.row().next_row(), end_row)
4852 };
4853
4854 let highlighted_range = HighlightedRange {
4855 color,
4856 line_height: layout.position_map.line_height,
4857 corner_radius,
4858 start_y: layout.content_origin.y
4859 + row_range.start.as_f32() * layout.position_map.line_height
4860 - layout.position_map.scroll_pixel_position.y,
4861 lines: row_range
4862 .iter_rows()
4863 .map(|row| {
4864 let line_layout =
4865 &layout.position_map.line_layouts[row.minus(start_row) as usize];
4866 HighlightedRangeLine {
4867 start_x: if row == range.start.row() {
4868 layout.content_origin.x
4869 + line_layout.x_for_index(range.start.column() as usize)
4870 - layout.position_map.scroll_pixel_position.x
4871 } else {
4872 layout.content_origin.x
4873 - layout.position_map.scroll_pixel_position.x
4874 },
4875 end_x: if row == range.end.row() {
4876 layout.content_origin.x
4877 + line_layout.x_for_index(range.end.column() as usize)
4878 - layout.position_map.scroll_pixel_position.x
4879 } else {
4880 layout.content_origin.x + line_layout.width + line_end_overshoot
4881 - layout.position_map.scroll_pixel_position.x
4882 },
4883 }
4884 })
4885 .collect(),
4886 };
4887
4888 highlighted_range.paint(layout.text_hitbox.bounds, cx);
4889 }
4890 }
4891
4892 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4893 if let Some(mut inline_blame) = layout.inline_blame.take() {
4894 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4895 inline_blame.paint(cx);
4896 })
4897 }
4898 }
4899
4900 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4901 for mut block in layout.blocks.drain(..) {
4902 block.element.paint(cx);
4903 }
4904 }
4905
4906 fn paint_inline_completion_popover(
4907 &mut self,
4908 layout: &mut EditorLayout,
4909 cx: &mut WindowContext,
4910 ) {
4911 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
4912 inline_completion_popover.paint(cx);
4913 }
4914 }
4915
4916 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4917 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
4918 mouse_context_menu.paint(cx);
4919 }
4920 }
4921
4922 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4923 cx.on_mouse_event({
4924 let position_map = layout.position_map.clone();
4925 let editor = self.editor.clone();
4926 let hitbox = layout.hitbox.clone();
4927 let mut delta = ScrollDelta::default();
4928
4929 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
4930 // accidentally turn off their scrolling.
4931 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
4932
4933 move |event: &ScrollWheelEvent, phase, cx| {
4934 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
4935 delta = delta.coalesce(event.delta);
4936 editor.update(cx, |editor, cx| {
4937 let position_map: &PositionMap = &position_map;
4938
4939 let line_height = position_map.line_height;
4940 let max_glyph_width = position_map.em_width;
4941 let (delta, axis) = match delta {
4942 gpui::ScrollDelta::Pixels(mut pixels) => {
4943 //Trackpad
4944 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
4945 (pixels, axis)
4946 }
4947
4948 gpui::ScrollDelta::Lines(lines) => {
4949 //Not trackpad
4950 let pixels =
4951 point(lines.x * max_glyph_width, lines.y * line_height);
4952 (pixels, None)
4953 }
4954 };
4955
4956 let current_scroll_position = position_map.snapshot.scroll_position();
4957 let x = (current_scroll_position.x * max_glyph_width
4958 - (delta.x * scroll_sensitivity))
4959 / max_glyph_width;
4960 let y = (current_scroll_position.y * line_height
4961 - (delta.y * scroll_sensitivity))
4962 / line_height;
4963 let mut scroll_position =
4964 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
4965 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
4966 if forbid_vertical_scroll {
4967 scroll_position.y = current_scroll_position.y;
4968 }
4969
4970 if scroll_position != current_scroll_position {
4971 editor.scroll(scroll_position, axis, cx);
4972 cx.stop_propagation();
4973 } else if y < 0. {
4974 // Due to clamping, we may fail to detect cases of overscroll to the top;
4975 // We want the scroll manager to get an update in such cases and detect the change of direction
4976 // on the next frame.
4977 cx.notify();
4978 }
4979 });
4980 }
4981 }
4982 });
4983 }
4984
4985 fn paint_mouse_listeners(
4986 &mut self,
4987 layout: &EditorLayout,
4988 hovered_hunk: Option<HoveredHunk>,
4989 cx: &mut WindowContext,
4990 ) {
4991 self.paint_scroll_wheel_listener(layout, cx);
4992
4993 cx.on_mouse_event({
4994 let position_map = layout.position_map.clone();
4995 let editor = self.editor.clone();
4996 let text_hitbox = layout.text_hitbox.clone();
4997 let gutter_hitbox = layout.gutter_hitbox.clone();
4998 let line_numbers = layout.line_numbers.clone();
4999
5000 move |event: &MouseDownEvent, phase, cx| {
5001 if phase == DispatchPhase::Bubble {
5002 match event.button {
5003 MouseButton::Left => editor.update(cx, |editor, cx| {
5004 Self::mouse_left_down(
5005 editor,
5006 event,
5007 hovered_hunk.clone(),
5008 &position_map,
5009 &text_hitbox,
5010 &gutter_hitbox,
5011 line_numbers.as_ref(),
5012 cx,
5013 );
5014 }),
5015 MouseButton::Right => editor.update(cx, |editor, cx| {
5016 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
5017 }),
5018 MouseButton::Middle => editor.update(cx, |editor, cx| {
5019 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
5020 }),
5021 _ => {}
5022 };
5023 }
5024 }
5025 });
5026
5027 cx.on_mouse_event({
5028 let editor = self.editor.clone();
5029 let position_map = layout.position_map.clone();
5030 let text_hitbox = layout.text_hitbox.clone();
5031
5032 move |event: &MouseUpEvent, phase, cx| {
5033 if phase == DispatchPhase::Bubble {
5034 editor.update(cx, |editor, cx| {
5035 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
5036 });
5037 }
5038 }
5039 });
5040 cx.on_mouse_event({
5041 let position_map = layout.position_map.clone();
5042 let editor = self.editor.clone();
5043 let text_hitbox = layout.text_hitbox.clone();
5044 let gutter_hitbox = layout.gutter_hitbox.clone();
5045
5046 move |event: &MouseMoveEvent, phase, cx| {
5047 if phase == DispatchPhase::Bubble {
5048 editor.update(cx, |editor, cx| {
5049 if editor.hover_state.focused(cx) {
5050 return;
5051 }
5052 if event.pressed_button == Some(MouseButton::Left)
5053 || event.pressed_button == Some(MouseButton::Middle)
5054 {
5055 Self::mouse_dragged(
5056 editor,
5057 event,
5058 &position_map,
5059 text_hitbox.bounds,
5060 cx,
5061 )
5062 }
5063
5064 Self::mouse_moved(
5065 editor,
5066 event,
5067 &position_map,
5068 &text_hitbox,
5069 &gutter_hitbox,
5070 cx,
5071 )
5072 });
5073 }
5074 }
5075 });
5076 }
5077
5078 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
5079 bounds.top_right().x - self.style.scrollbar_width
5080 }
5081
5082 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
5083 let style = &self.style;
5084 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5085 let layout = cx
5086 .text_system()
5087 .shape_line(
5088 SharedString::from(" ".repeat(column)),
5089 font_size,
5090 &[TextRun {
5091 len: column,
5092 font: style.text.font(),
5093 color: Hsla::default(),
5094 background_color: None,
5095 underline: None,
5096 strikethrough: None,
5097 }],
5098 )
5099 .unwrap();
5100
5101 layout.width
5102 }
5103
5104 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
5105 let digit_count = (snapshot.widest_line_number() as f32).log10().floor() as usize + 1;
5106 self.column_pixels(digit_count, cx)
5107 }
5108
5109 fn shape_line_number(
5110 &self,
5111 text: SharedString,
5112 color: Hsla,
5113 cx: &WindowContext,
5114 ) -> anyhow::Result<ShapedLine> {
5115 let run = TextRun {
5116 len: text.len(),
5117 font: self.style.text.font(),
5118 color,
5119 background_color: None,
5120 underline: None,
5121 strikethrough: None,
5122 };
5123 cx.text_system().shape_line(
5124 text,
5125 self.style.text.font_size.to_pixels(cx.rem_size()),
5126 &[run],
5127 )
5128 }
5129}
5130
5131fn header_jump_data(
5132 snapshot: &EditorSnapshot,
5133 block_row_start: DisplayRow,
5134 height: u32,
5135 for_excerpt: &ExcerptInfo,
5136) -> JumpData {
5137 let range = &for_excerpt.range;
5138 let buffer = &for_excerpt.buffer;
5139 let jump_anchor = range
5140 .primary
5141 .as_ref()
5142 .map_or(range.context.start, |primary| primary.start);
5143
5144 let excerpt_start = range.context.start;
5145 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
5146 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
5147 0
5148 } else {
5149 let excerpt_start_row = language::ToPoint::to_point(&excerpt_start, buffer).row;
5150 jump_position.row - excerpt_start_row
5151 };
5152
5153 let line_offset_from_top = (block_row_start.0 + height + offset_from_excerpt_start)
5154 .saturating_sub(
5155 snapshot
5156 .scroll_anchor
5157 .scroll_position(&snapshot.display_snapshot)
5158 .y as u32,
5159 );
5160
5161 JumpData::MultiBufferPoint {
5162 excerpt_id: for_excerpt.id,
5163 anchor: jump_anchor,
5164 position: language::ToPoint::to_point(&jump_anchor, buffer),
5165 line_offset_from_top,
5166 }
5167}
5168
5169fn all_edits_insertions_or_deletions(
5170 edits: &Vec<(Range<Anchor>, String)>,
5171 snapshot: &MultiBufferSnapshot,
5172) -> bool {
5173 let mut all_insertions = true;
5174 let mut all_deletions = true;
5175
5176 for (range, new_text) in edits.iter() {
5177 let range_is_empty = range.to_offset(&snapshot).is_empty();
5178 let text_is_empty = new_text.is_empty();
5179
5180 if range_is_empty != text_is_empty {
5181 if range_is_empty {
5182 all_deletions = false;
5183 } else {
5184 all_insertions = false;
5185 }
5186 } else {
5187 return false;
5188 }
5189
5190 if !all_insertions && !all_deletions {
5191 return false;
5192 }
5193 }
5194 all_insertions || all_deletions
5195}
5196
5197#[allow(clippy::too_many_arguments)]
5198fn prepaint_gutter_button(
5199 button: IconButton,
5200 row: DisplayRow,
5201 line_height: Pixels,
5202 gutter_dimensions: &GutterDimensions,
5203 scroll_pixel_position: gpui::Point<Pixels>,
5204 gutter_hitbox: &Hitbox,
5205 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
5206 cx: &mut WindowContext,
5207) -> AnyElement {
5208 let mut button = button.into_any_element();
5209 let available_space = size(
5210 AvailableSpace::MinContent,
5211 AvailableSpace::Definite(line_height),
5212 );
5213 let indicator_size = button.layout_as_root(available_space, cx);
5214
5215 let blame_width = gutter_dimensions.git_blame_entries_width;
5216 let gutter_width = rows_with_hunk_bounds
5217 .get(&row)
5218 .map(|bounds| bounds.size.width);
5219 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
5220
5221 let mut x = left_offset;
5222 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
5223 - indicator_size.width
5224 - left_offset;
5225 x += available_width / 2.;
5226
5227 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
5228 y += (line_height - indicator_size.height) / 2.;
5229
5230 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
5231 button
5232}
5233
5234fn render_inline_blame_entry(
5235 blame: &gpui::Model<GitBlame>,
5236 blame_entry: BlameEntry,
5237 style: &EditorStyle,
5238 workspace: Option<WeakView<Workspace>>,
5239 cx: &mut WindowContext,
5240) -> AnyElement {
5241 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5242
5243 let author = blame_entry.author.as_deref().unwrap_or_default();
5244 let summary_enabled = ProjectSettings::get_global(cx)
5245 .git
5246 .show_inline_commit_summary();
5247
5248 let text = match blame_entry.summary.as_ref() {
5249 Some(summary) if summary_enabled => {
5250 format!("{}, {} - {}", author, relative_timestamp, summary)
5251 }
5252 _ => format!("{}, {}", author, relative_timestamp),
5253 };
5254
5255 let details = blame.read(cx).details_for_entry(&blame_entry);
5256
5257 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
5258
5259 h_flex()
5260 .id("inline-blame")
5261 .w_full()
5262 .font_family(style.text.font().family)
5263 .text_color(cx.theme().status().hint)
5264 .line_height(style.text.line_height)
5265 .child(Icon::new(IconName::FileGit).color(Color::Hint))
5266 .child(text)
5267 .gap_2()
5268 .hoverable_tooltip(move |_| tooltip.clone().into())
5269 .into_any()
5270}
5271
5272fn render_blame_entry(
5273 ix: usize,
5274 blame: &gpui::Model<GitBlame>,
5275 blame_entry: BlameEntry,
5276 style: &EditorStyle,
5277 last_used_color: &mut Option<(PlayerColor, Oid)>,
5278 editor: View<Editor>,
5279 cx: &mut WindowContext,
5280) -> AnyElement {
5281 let mut sha_color = cx
5282 .theme()
5283 .players()
5284 .color_for_participant(blame_entry.sha.into());
5285 // If the last color we used is the same as the one we get for this line, but
5286 // the commit SHAs are different, then we try again to get a different color.
5287 match *last_used_color {
5288 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
5289 let index: u32 = blame_entry.sha.into();
5290 sha_color = cx.theme().players().color_for_participant(index + 1);
5291 }
5292 _ => {}
5293 };
5294 last_used_color.replace((sha_color, blame_entry.sha));
5295
5296 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5297
5298 let short_commit_id = blame_entry.sha.display_short();
5299
5300 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
5301 let name = util::truncate_and_trailoff(author_name, GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED);
5302
5303 let details = blame.read(cx).details_for_entry(&blame_entry);
5304
5305 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
5306
5307 let tooltip = cx.new_view(|_| {
5308 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
5309 });
5310
5311 h_flex()
5312 .w_full()
5313 .justify_between()
5314 .font_family(style.text.font().family)
5315 .line_height(style.text.line_height)
5316 .id(("blame", ix))
5317 .text_color(cx.theme().status().hint)
5318 .pr_2()
5319 .gap_2()
5320 .child(
5321 h_flex()
5322 .items_center()
5323 .gap_2()
5324 .child(div().text_color(sha_color.cursor).child(short_commit_id))
5325 .child(name),
5326 )
5327 .child(relative_timestamp)
5328 .on_mouse_down(MouseButton::Right, {
5329 let blame_entry = blame_entry.clone();
5330 let details = details.clone();
5331 move |event, cx| {
5332 deploy_blame_entry_context_menu(
5333 &blame_entry,
5334 details.as_ref(),
5335 editor.clone(),
5336 event.position,
5337 cx,
5338 );
5339 }
5340 })
5341 .hover(|style| style.bg(cx.theme().colors().element_hover))
5342 .when_some(
5343 details.and_then(|details| details.permalink),
5344 |this, url| {
5345 let url = url.clone();
5346 this.cursor_pointer().on_click(move |_, cx| {
5347 cx.stop_propagation();
5348 cx.open_url(url.as_str())
5349 })
5350 },
5351 )
5352 .hoverable_tooltip(move |_| tooltip.clone().into())
5353 .into_any()
5354}
5355
5356fn deploy_blame_entry_context_menu(
5357 blame_entry: &BlameEntry,
5358 details: Option<&CommitDetails>,
5359 editor: View<Editor>,
5360 position: gpui::Point<Pixels>,
5361 cx: &mut WindowContext,
5362) {
5363 let context_menu = ContextMenu::build(cx, move |menu, _| {
5364 let sha = format!("{}", blame_entry.sha);
5365 menu.on_blur_subscription(Subscription::new(|| {}))
5366 .entry("Copy commit SHA", None, move |cx| {
5367 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
5368 })
5369 .when_some(
5370 details.and_then(|details| details.permalink.clone()),
5371 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
5372 )
5373 });
5374
5375 editor.update(cx, move |editor, cx| {
5376 editor.mouse_context_menu = Some(MouseContextMenu::new(
5377 MenuPosition::PinnedToScreen(position),
5378 context_menu,
5379 cx,
5380 ));
5381 cx.notify();
5382 });
5383}
5384
5385#[derive(Debug)]
5386pub(crate) struct LineWithInvisibles {
5387 fragments: SmallVec<[LineFragment; 1]>,
5388 invisibles: Vec<Invisible>,
5389 len: usize,
5390 width: Pixels,
5391 font_size: Pixels,
5392}
5393
5394#[allow(clippy::large_enum_variant)]
5395enum LineFragment {
5396 Text(ShapedLine),
5397 Element {
5398 element: Option<AnyElement>,
5399 size: Size<Pixels>,
5400 len: usize,
5401 },
5402}
5403
5404impl fmt::Debug for LineFragment {
5405 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5406 match self {
5407 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5408 LineFragment::Element { size, len, .. } => f
5409 .debug_struct("Element")
5410 .field("size", size)
5411 .field("len", len)
5412 .finish(),
5413 }
5414 }
5415}
5416
5417impl LineWithInvisibles {
5418 #[allow(clippy::too_many_arguments)]
5419 fn from_chunks<'a>(
5420 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5421 editor_style: &EditorStyle,
5422 max_line_len: usize,
5423 max_line_count: usize,
5424 editor_mode: EditorMode,
5425 text_width: Pixels,
5426 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5427 cx: &mut WindowContext,
5428 ) -> Vec<Self> {
5429 let text_style = &editor_style.text;
5430 let mut layouts = Vec::with_capacity(max_line_count);
5431 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5432 let mut line = String::new();
5433 let mut invisibles = Vec::new();
5434 let mut width = Pixels::ZERO;
5435 let mut len = 0;
5436 let mut styles = Vec::new();
5437 let mut non_whitespace_added = false;
5438 let mut row = 0;
5439 let mut line_exceeded_max_len = false;
5440 let font_size = text_style.font_size.to_pixels(cx.rem_size());
5441
5442 let ellipsis = SharedString::from("⋯");
5443
5444 for highlighted_chunk in chunks.chain([HighlightedChunk {
5445 text: "\n",
5446 style: None,
5447 is_tab: false,
5448 replacement: None,
5449 }]) {
5450 if let Some(replacement) = highlighted_chunk.replacement {
5451 if !line.is_empty() {
5452 let shaped_line = cx
5453 .text_system()
5454 .shape_line(line.clone().into(), font_size, &styles)
5455 .unwrap();
5456 width += shaped_line.width;
5457 len += shaped_line.len;
5458 fragments.push(LineFragment::Text(shaped_line));
5459 line.clear();
5460 styles.clear();
5461 }
5462
5463 match replacement {
5464 ChunkReplacement::Renderer(renderer) => {
5465 let available_width = if renderer.constrain_width {
5466 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5467 ellipsis.clone()
5468 } else {
5469 SharedString::from(Arc::from(highlighted_chunk.text))
5470 };
5471 let shaped_line = cx
5472 .text_system()
5473 .shape_line(
5474 chunk,
5475 font_size,
5476 &[text_style.to_run(highlighted_chunk.text.len())],
5477 )
5478 .unwrap();
5479 AvailableSpace::Definite(shaped_line.width)
5480 } else {
5481 AvailableSpace::MinContent
5482 };
5483
5484 let mut element = (renderer.render)(&mut ChunkRendererContext {
5485 context: cx,
5486 max_width: text_width,
5487 });
5488 let line_height = text_style.line_height_in_pixels(cx.rem_size());
5489 let size = element.layout_as_root(
5490 size(available_width, AvailableSpace::Definite(line_height)),
5491 cx,
5492 );
5493
5494 width += size.width;
5495 len += highlighted_chunk.text.len();
5496 fragments.push(LineFragment::Element {
5497 element: Some(element),
5498 size,
5499 len: highlighted_chunk.text.len(),
5500 });
5501 }
5502 ChunkReplacement::Str(x) => {
5503 let text_style = if let Some(style) = highlighted_chunk.style {
5504 Cow::Owned(text_style.clone().highlight(style))
5505 } else {
5506 Cow::Borrowed(text_style)
5507 };
5508
5509 let run = TextRun {
5510 len: x.len(),
5511 font: text_style.font(),
5512 color: text_style.color,
5513 background_color: text_style.background_color,
5514 underline: text_style.underline,
5515 strikethrough: text_style.strikethrough,
5516 };
5517 let line_layout = cx
5518 .text_system()
5519 .shape_line(x, font_size, &[run])
5520 .unwrap()
5521 .with_len(highlighted_chunk.text.len());
5522
5523 width += line_layout.width;
5524 len += highlighted_chunk.text.len();
5525 fragments.push(LineFragment::Text(line_layout))
5526 }
5527 }
5528 } else {
5529 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5530 if ix > 0 {
5531 let shaped_line = cx
5532 .text_system()
5533 .shape_line(line.clone().into(), font_size, &styles)
5534 .unwrap();
5535 width += shaped_line.width;
5536 len += shaped_line.len;
5537 fragments.push(LineFragment::Text(shaped_line));
5538 layouts.push(Self {
5539 width: mem::take(&mut width),
5540 len: mem::take(&mut len),
5541 fragments: mem::take(&mut fragments),
5542 invisibles: std::mem::take(&mut invisibles),
5543 font_size,
5544 });
5545
5546 line.clear();
5547 styles.clear();
5548 row += 1;
5549 line_exceeded_max_len = false;
5550 non_whitespace_added = false;
5551 if row == max_line_count {
5552 return layouts;
5553 }
5554 }
5555
5556 if !line_chunk.is_empty() && !line_exceeded_max_len {
5557 let text_style = if let Some(style) = highlighted_chunk.style {
5558 Cow::Owned(text_style.clone().highlight(style))
5559 } else {
5560 Cow::Borrowed(text_style)
5561 };
5562
5563 if line.len() + line_chunk.len() > max_line_len {
5564 let mut chunk_len = max_line_len - line.len();
5565 while !line_chunk.is_char_boundary(chunk_len) {
5566 chunk_len -= 1;
5567 }
5568 line_chunk = &line_chunk[..chunk_len];
5569 line_exceeded_max_len = true;
5570 }
5571
5572 styles.push(TextRun {
5573 len: line_chunk.len(),
5574 font: text_style.font(),
5575 color: text_style.color,
5576 background_color: text_style.background_color,
5577 underline: text_style.underline,
5578 strikethrough: text_style.strikethrough,
5579 });
5580
5581 if editor_mode == EditorMode::Full {
5582 // Line wrap pads its contents with fake whitespaces,
5583 // avoid printing them
5584 let is_soft_wrapped = is_row_soft_wrapped(row);
5585 if highlighted_chunk.is_tab {
5586 if non_whitespace_added || !is_soft_wrapped {
5587 invisibles.push(Invisible::Tab {
5588 line_start_offset: line.len(),
5589 line_end_offset: line.len() + line_chunk.len(),
5590 });
5591 }
5592 } else {
5593 invisibles.extend(line_chunk.char_indices().filter_map(
5594 |(index, c)| {
5595 let is_whitespace = c.is_whitespace();
5596 non_whitespace_added |= !is_whitespace;
5597 if is_whitespace
5598 && (non_whitespace_added || !is_soft_wrapped)
5599 {
5600 Some(Invisible::Whitespace {
5601 line_offset: line.len() + index,
5602 })
5603 } else {
5604 None
5605 }
5606 },
5607 ))
5608 }
5609 }
5610
5611 line.push_str(line_chunk);
5612 }
5613 }
5614 }
5615 }
5616
5617 layouts
5618 }
5619
5620 fn prepaint(
5621 &mut self,
5622 line_height: Pixels,
5623 scroll_pixel_position: gpui::Point<Pixels>,
5624 row: DisplayRow,
5625 content_origin: gpui::Point<Pixels>,
5626 line_elements: &mut SmallVec<[AnyElement; 1]>,
5627 cx: &mut WindowContext,
5628 ) {
5629 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
5630 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
5631 for fragment in &mut self.fragments {
5632 match fragment {
5633 LineFragment::Text(line) => {
5634 fragment_origin.x += line.width;
5635 }
5636 LineFragment::Element { element, size, .. } => {
5637 let mut element = element
5638 .take()
5639 .expect("you can't prepaint LineWithInvisibles twice");
5640
5641 // Center the element vertically within the line.
5642 let mut element_origin = fragment_origin;
5643 element_origin.y += (line_height - size.height) / 2.;
5644 element.prepaint_at(element_origin, cx);
5645 line_elements.push(element);
5646
5647 fragment_origin.x += size.width;
5648 }
5649 }
5650 }
5651 }
5652
5653 fn draw(
5654 &self,
5655 layout: &EditorLayout,
5656 row: DisplayRow,
5657 content_origin: gpui::Point<Pixels>,
5658 whitespace_setting: ShowWhitespaceSetting,
5659 selection_ranges: &[Range<DisplayPoint>],
5660 cx: &mut WindowContext,
5661 ) {
5662 let line_height = layout.position_map.line_height;
5663 let line_y = line_height
5664 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
5665
5666 let mut fragment_origin =
5667 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
5668
5669 for fragment in &self.fragments {
5670 match fragment {
5671 LineFragment::Text(line) => {
5672 line.paint(fragment_origin, line_height, cx).log_err();
5673 fragment_origin.x += line.width;
5674 }
5675 LineFragment::Element { size, .. } => {
5676 fragment_origin.x += size.width;
5677 }
5678 }
5679 }
5680
5681 self.draw_invisibles(
5682 selection_ranges,
5683 layout,
5684 content_origin,
5685 line_y,
5686 row,
5687 line_height,
5688 whitespace_setting,
5689 cx,
5690 );
5691 }
5692
5693 #[allow(clippy::too_many_arguments)]
5694 fn draw_invisibles(
5695 &self,
5696 selection_ranges: &[Range<DisplayPoint>],
5697 layout: &EditorLayout,
5698 content_origin: gpui::Point<Pixels>,
5699 line_y: Pixels,
5700 row: DisplayRow,
5701 line_height: Pixels,
5702 whitespace_setting: ShowWhitespaceSetting,
5703 cx: &mut WindowContext,
5704 ) {
5705 let extract_whitespace_info = |invisible: &Invisible| {
5706 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
5707 Invisible::Tab {
5708 line_start_offset,
5709 line_end_offset,
5710 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
5711 Invisible::Whitespace { line_offset } => {
5712 (*line_offset, line_offset + 1, &layout.space_invisible)
5713 }
5714 };
5715
5716 let x_offset = self.x_for_index(token_offset);
5717 let invisible_offset =
5718 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
5719 let origin = content_origin
5720 + gpui::point(
5721 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
5722 line_y,
5723 );
5724
5725 (
5726 [token_offset, token_end_offset],
5727 Box::new(move |cx: &mut WindowContext| {
5728 invisible_symbol.paint(origin, line_height, cx).log_err();
5729 }),
5730 )
5731 };
5732
5733 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
5734 match whitespace_setting {
5735 ShowWhitespaceSetting::None => (),
5736 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
5737 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
5738 let invisible_point = DisplayPoint::new(row, start as u32);
5739 if !selection_ranges
5740 .iter()
5741 .any(|region| region.start <= invisible_point && invisible_point < region.end)
5742 {
5743 return;
5744 }
5745
5746 paint(cx);
5747 }),
5748
5749 // For a whitespace to be on a boundary, any of the following conditions need to be met:
5750 // - It is a tab
5751 // - It is adjacent to an edge (start or end)
5752 // - It is adjacent to a whitespace (left or right)
5753 ShowWhitespaceSetting::Boundary => {
5754 // We'll need to keep track of the last invisible we've seen and then check if we are adjacent to it for some of
5755 // the above cases.
5756 // Note: We zip in the original `invisibles` to check for tab equality
5757 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
5758 for (([start, end], paint), invisible) in
5759 invisible_iter.zip_eq(self.invisibles.iter())
5760 {
5761 let should_render = match (&last_seen, invisible) {
5762 (_, Invisible::Tab { .. }) => true,
5763 (Some((_, last_end, _)), _) => *last_end == start,
5764 _ => false,
5765 };
5766
5767 if should_render || start == 0 || end == self.len {
5768 paint(cx);
5769
5770 // Since we are scanning from the left, we will skip over the first available whitespace that is part
5771 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
5772 if let Some((should_render_last, last_end, paint_last)) = last_seen {
5773 // Note that we need to make sure that the last one is actually adjacent
5774 if !should_render_last && last_end == start {
5775 paint_last(cx);
5776 }
5777 }
5778 }
5779
5780 // Manually render anything within a selection
5781 let invisible_point = DisplayPoint::new(row, start as u32);
5782 if selection_ranges.iter().any(|region| {
5783 region.start <= invisible_point && invisible_point < region.end
5784 }) {
5785 paint(cx);
5786 }
5787
5788 last_seen = Some((should_render, end, paint));
5789 }
5790 }
5791 }
5792 }
5793
5794 pub fn x_for_index(&self, index: usize) -> Pixels {
5795 let mut fragment_start_x = Pixels::ZERO;
5796 let mut fragment_start_index = 0;
5797
5798 for fragment in &self.fragments {
5799 match fragment {
5800 LineFragment::Text(shaped_line) => {
5801 let fragment_end_index = fragment_start_index + shaped_line.len;
5802 if index < fragment_end_index {
5803 return fragment_start_x
5804 + shaped_line.x_for_index(index - fragment_start_index);
5805 }
5806 fragment_start_x += shaped_line.width;
5807 fragment_start_index = fragment_end_index;
5808 }
5809 LineFragment::Element { len, size, .. } => {
5810 let fragment_end_index = fragment_start_index + len;
5811 if index < fragment_end_index {
5812 return fragment_start_x;
5813 }
5814 fragment_start_x += size.width;
5815 fragment_start_index = fragment_end_index;
5816 }
5817 }
5818 }
5819
5820 fragment_start_x
5821 }
5822
5823 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
5824 let mut fragment_start_x = Pixels::ZERO;
5825 let mut fragment_start_index = 0;
5826
5827 for fragment in &self.fragments {
5828 match fragment {
5829 LineFragment::Text(shaped_line) => {
5830 let fragment_end_x = fragment_start_x + shaped_line.width;
5831 if x < fragment_end_x {
5832 return Some(
5833 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
5834 );
5835 }
5836 fragment_start_x = fragment_end_x;
5837 fragment_start_index += shaped_line.len;
5838 }
5839 LineFragment::Element { len, size, .. } => {
5840 let fragment_end_x = fragment_start_x + size.width;
5841 if x < fragment_end_x {
5842 return Some(fragment_start_index);
5843 }
5844 fragment_start_index += len;
5845 fragment_start_x = fragment_end_x;
5846 }
5847 }
5848 }
5849
5850 None
5851 }
5852
5853 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
5854 let mut fragment_start_index = 0;
5855
5856 for fragment in &self.fragments {
5857 match fragment {
5858 LineFragment::Text(shaped_line) => {
5859 let fragment_end_index = fragment_start_index + shaped_line.len;
5860 if index < fragment_end_index {
5861 return shaped_line.font_id_for_index(index - fragment_start_index);
5862 }
5863 fragment_start_index = fragment_end_index;
5864 }
5865 LineFragment::Element { len, .. } => {
5866 let fragment_end_index = fragment_start_index + len;
5867 if index < fragment_end_index {
5868 return None;
5869 }
5870 fragment_start_index = fragment_end_index;
5871 }
5872 }
5873 }
5874
5875 None
5876 }
5877}
5878
5879#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5880enum Invisible {
5881 /// A tab character
5882 ///
5883 /// A tab character is internally represented by spaces (configured by the user's tab width)
5884 /// aligned to the nearest column, so it's necessary to store the start and end offset for
5885 /// adjacency checks.
5886 Tab {
5887 line_start_offset: usize,
5888 line_end_offset: usize,
5889 },
5890 Whitespace {
5891 line_offset: usize,
5892 },
5893}
5894
5895impl EditorElement {
5896 /// Returns the rem size to use when rendering the [`EditorElement`].
5897 ///
5898 /// This allows UI elements to scale based on the `buffer_font_size`.
5899 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
5900 match self.editor.read(cx).mode {
5901 EditorMode::Full => {
5902 let buffer_font_size = self.style.text.font_size;
5903 match buffer_font_size {
5904 AbsoluteLength::Pixels(pixels) => {
5905 let rem_size_scale = {
5906 // Our default UI font size is 14px on a 16px base scale.
5907 // This means the default UI font size is 0.875rems.
5908 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
5909
5910 // We then determine the delta between a single rem and the default font
5911 // size scale.
5912 let default_font_size_delta = 1. - default_font_size_scale;
5913
5914 // Finally, we add this delta to 1rem to get the scale factor that
5915 // should be used to scale up the UI.
5916 1. + default_font_size_delta
5917 };
5918
5919 Some(pixels * rem_size_scale)
5920 }
5921 AbsoluteLength::Rems(rems) => {
5922 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
5923 }
5924 }
5925 }
5926 // We currently use single-line and auto-height editors in UI contexts,
5927 // so we don't want to scale everything with the buffer font size, as it
5928 // ends up looking off.
5929 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
5930 }
5931 }
5932}
5933
5934impl Element for EditorElement {
5935 type RequestLayoutState = ();
5936 type PrepaintState = EditorLayout;
5937
5938 fn id(&self) -> Option<ElementId> {
5939 None
5940 }
5941
5942 fn request_layout(
5943 &mut self,
5944 _: Option<&GlobalElementId>,
5945 cx: &mut WindowContext,
5946 ) -> (gpui::LayoutId, ()) {
5947 let rem_size = self.rem_size(cx);
5948 cx.with_rem_size(rem_size, |cx| {
5949 self.editor.update(cx, |editor, cx| {
5950 editor.set_style(self.style.clone(), cx);
5951
5952 let layout_id = match editor.mode {
5953 EditorMode::SingleLine { auto_width } => {
5954 let rem_size = cx.rem_size();
5955
5956 let height = self.style.text.line_height_in_pixels(rem_size);
5957 if auto_width {
5958 let editor_handle = cx.view().clone();
5959 let style = self.style.clone();
5960 cx.request_measured_layout(Style::default(), move |_, _, cx| {
5961 let editor_snapshot =
5962 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
5963 let line = Self::layout_lines(
5964 DisplayRow(0)..DisplayRow(1),
5965 &editor_snapshot,
5966 &style,
5967 px(f32::MAX),
5968 |_| false, // Single lines never soft wrap
5969 cx,
5970 )
5971 .pop()
5972 .unwrap();
5973
5974 let font_id = cx.text_system().resolve_font(&style.text.font());
5975 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5976 let em_width = cx
5977 .text_system()
5978 .typographic_bounds(font_id, font_size, 'm')
5979 .unwrap()
5980 .size
5981 .width;
5982
5983 size(line.width + em_width, height)
5984 })
5985 } else {
5986 let mut style = Style::default();
5987 style.size.height = height.into();
5988 style.size.width = relative(1.).into();
5989 cx.request_layout(style, None)
5990 }
5991 }
5992 EditorMode::AutoHeight { max_lines } => {
5993 let editor_handle = cx.view().clone();
5994 let max_line_number_width =
5995 self.max_line_number_width(&editor.snapshot(cx), cx);
5996 cx.request_measured_layout(
5997 Style::default(),
5998 move |known_dimensions, available_space, cx| {
5999 editor_handle
6000 .update(cx, |editor, cx| {
6001 compute_auto_height_layout(
6002 editor,
6003 max_lines,
6004 max_line_number_width,
6005 known_dimensions,
6006 available_space.width,
6007 cx,
6008 )
6009 })
6010 .unwrap_or_default()
6011 },
6012 )
6013 }
6014 EditorMode::Full => {
6015 let mut style = Style::default();
6016 style.size.width = relative(1.).into();
6017 style.size.height = relative(1.).into();
6018 cx.request_layout(style, None)
6019 }
6020 };
6021
6022 (layout_id, ())
6023 })
6024 })
6025 }
6026
6027 fn prepaint(
6028 &mut self,
6029 _: Option<&GlobalElementId>,
6030 bounds: Bounds<Pixels>,
6031 _: &mut Self::RequestLayoutState,
6032 cx: &mut WindowContext,
6033 ) -> Self::PrepaintState {
6034 let text_style = TextStyleRefinement {
6035 font_size: Some(self.style.text.font_size),
6036 line_height: Some(self.style.text.line_height),
6037 ..Default::default()
6038 };
6039 let focus_handle = self.editor.focus_handle(cx);
6040 cx.set_view_id(self.editor.entity_id());
6041 cx.set_focus_handle(&focus_handle);
6042
6043 let rem_size = self.rem_size(cx);
6044 cx.with_rem_size(rem_size, |cx| {
6045 cx.with_text_style(Some(text_style), |cx| {
6046 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6047 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
6048 let style = self.style.clone();
6049
6050 let font_id = cx.text_system().resolve_font(&style.text.font());
6051 let font_size = style.text.font_size.to_pixels(cx.rem_size());
6052 let line_height = style.text.line_height_in_pixels(cx.rem_size());
6053 let em_width = cx
6054 .text_system()
6055 .typographic_bounds(font_id, font_size, 'm')
6056 .unwrap()
6057 .size
6058 .width;
6059 let em_advance = cx
6060 .text_system()
6061 .advance(font_id, font_size, 'm')
6062 .unwrap()
6063 .width;
6064
6065 let letter_size = size(em_width, line_height);
6066
6067 let gutter_dimensions = snapshot.gutter_dimensions(
6068 font_id,
6069 font_size,
6070 em_width,
6071 em_advance,
6072 self.max_line_number_width(&snapshot, cx),
6073 cx,
6074 );
6075 let text_width = bounds.size.width - gutter_dimensions.width;
6076
6077 let editor_width = text_width - gutter_dimensions.margin - em_width;
6078
6079 snapshot = self.editor.update(cx, |editor, cx| {
6080 editor.last_bounds = Some(bounds);
6081 editor.gutter_dimensions = gutter_dimensions;
6082 editor.set_visible_line_count(bounds.size.height / line_height, cx);
6083
6084 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
6085 snapshot
6086 } else {
6087 let wrap_width = match editor.soft_wrap_mode(cx) {
6088 SoftWrap::GitDiff => None,
6089 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
6090 SoftWrap::EditorWidth => Some(editor_width),
6091 SoftWrap::Column(column) => Some(column as f32 * em_advance),
6092 SoftWrap::Bounded(column) => {
6093 Some(editor_width.min(column as f32 * em_advance))
6094 }
6095 };
6096
6097 if editor.set_wrap_width(wrap_width, cx) {
6098 editor.snapshot(cx)
6099 } else {
6100 snapshot
6101 }
6102 }
6103 });
6104
6105 let wrap_guides = self
6106 .editor
6107 .read(cx)
6108 .wrap_guides(cx)
6109 .iter()
6110 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
6111 .collect::<SmallVec<[_; 2]>>();
6112
6113 let hitbox = cx.insert_hitbox(bounds, false);
6114 let gutter_hitbox =
6115 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
6116 let text_hitbox = cx.insert_hitbox(
6117 Bounds {
6118 origin: gutter_hitbox.top_right(),
6119 size: size(text_width, bounds.size.height),
6120 },
6121 false,
6122 );
6123 // Offset the content_bounds from the text_bounds by the gutter margin (which
6124 // is roughly half a character wide) to make hit testing work more like how we want.
6125 let content_origin =
6126 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
6127
6128 let scrollbar_bounds =
6129 Bounds::from_corners(content_origin, bounds.bottom_right());
6130
6131 let height_in_lines = scrollbar_bounds.size.height / line_height;
6132
6133 // NOTE: The max row number in the current file, minus one
6134 let max_row = snapshot.max_point().row().as_f32();
6135
6136 // NOTE: The max scroll position for the top of the window
6137 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
6138 (max_row - height_in_lines + 1.).max(0.)
6139 } else {
6140 let settings = EditorSettings::get_global(cx);
6141 match settings.scroll_beyond_last_line {
6142 ScrollBeyondLastLine::OnePage => max_row,
6143 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
6144 ScrollBeyondLastLine::VerticalScrollMargin => {
6145 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
6146 .max(0.)
6147 }
6148 }
6149 };
6150
6151 // TODO: Autoscrolling for both axes
6152 let mut autoscroll_request = None;
6153 let mut autoscroll_containing_element = false;
6154 let mut autoscroll_horizontally = false;
6155 self.editor.update(cx, |editor, cx| {
6156 autoscroll_request = editor.autoscroll_request();
6157 autoscroll_containing_element =
6158 autoscroll_request.is_some() || editor.has_pending_selection();
6159 // TODO: Is this horizontal or vertical?!
6160 autoscroll_horizontally =
6161 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
6162 snapshot = editor.snapshot(cx);
6163 });
6164
6165 let mut scroll_position = snapshot.scroll_position();
6166 // The scroll position is a fractional point, the whole number of which represents
6167 // the top of the window in terms of display rows.
6168 let start_row = DisplayRow(scroll_position.y as u32);
6169 let max_row = snapshot.max_point().row();
6170 let end_row = cmp::min(
6171 (scroll_position.y + height_in_lines).ceil() as u32,
6172 max_row.next_row().0,
6173 );
6174 let end_row = DisplayRow(end_row);
6175
6176 let buffer_rows = snapshot
6177 .buffer_rows(start_row)
6178 .take((start_row..end_row).len())
6179 .collect::<Vec<_>>();
6180 let is_row_soft_wrapped =
6181 |row| buffer_rows.get(row).copied().flatten().is_none();
6182
6183 let start_anchor = if start_row == Default::default() {
6184 Anchor::min()
6185 } else {
6186 snapshot.buffer_snapshot.anchor_before(
6187 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
6188 )
6189 };
6190 let end_anchor = if end_row > max_row {
6191 Anchor::max()
6192 } else {
6193 snapshot.buffer_snapshot.anchor_before(
6194 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
6195 )
6196 };
6197
6198 let highlighted_rows = self
6199 .editor
6200 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
6201 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
6202 start_anchor..end_anchor,
6203 &snapshot.display_snapshot,
6204 cx.theme().colors(),
6205 );
6206 let highlighted_gutter_ranges =
6207 self.editor.read(cx).gutter_highlights_in_range(
6208 start_anchor..end_anchor,
6209 &snapshot.display_snapshot,
6210 cx,
6211 );
6212
6213 let redacted_ranges = self.editor.read(cx).redacted_ranges(
6214 start_anchor..end_anchor,
6215 &snapshot.display_snapshot,
6216 cx,
6217 );
6218
6219 let (local_selections, selected_buffer_ids): (
6220 Vec<Selection<Point>>,
6221 Vec<BufferId>,
6222 ) = self.editor.update(cx, |editor, cx| {
6223 let all_selections = editor.selections.all::<Point>(cx);
6224 let selected_buffer_ids = if editor.is_singleton(cx) {
6225 Vec::new()
6226 } else {
6227 let mut selected_buffer_ids = Vec::with_capacity(all_selections.len());
6228
6229 for selection in all_selections {
6230 for buffer_id in snapshot
6231 .buffer_snapshot
6232 .buffer_ids_in_selected_rows(selection)
6233 {
6234 if selected_buffer_ids.last() != Some(&buffer_id) {
6235 selected_buffer_ids.push(buffer_id);
6236 }
6237 }
6238 }
6239
6240 selected_buffer_ids
6241 };
6242
6243 let mut selections = editor
6244 .selections
6245 .disjoint_in_range(start_anchor..end_anchor, cx);
6246 selections.extend(editor.selections.pending(cx));
6247
6248 (selections, selected_buffer_ids)
6249 });
6250
6251 let (selections, active_rows, newest_selection_head) = self.layout_selections(
6252 start_anchor,
6253 end_anchor,
6254 &local_selections,
6255 &snapshot,
6256 start_row,
6257 end_row,
6258 cx,
6259 );
6260
6261 let line_numbers = self.layout_line_numbers(
6262 Some(&gutter_hitbox),
6263 gutter_dimensions,
6264 line_height,
6265 scroll_position,
6266 start_row..end_row,
6267 buffer_rows.iter().copied(),
6268 &active_rows,
6269 newest_selection_head,
6270 &snapshot,
6271 cx,
6272 );
6273
6274 let mut crease_toggles = cx.with_element_namespace("crease_toggles", |cx| {
6275 self.layout_crease_toggles(
6276 start_row..end_row,
6277 buffer_rows.iter().copied(),
6278 &active_rows,
6279 &snapshot,
6280 cx,
6281 )
6282 });
6283 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6284 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
6285 });
6286
6287 let display_hunks = self.layout_gutter_git_hunks(
6288 line_height,
6289 &gutter_hitbox,
6290 start_row..end_row,
6291 start_anchor..end_anchor,
6292 &snapshot,
6293 cx,
6294 );
6295
6296 let mut max_visible_line_width = Pixels::ZERO;
6297 let mut line_layouts = Self::layout_lines(
6298 start_row..end_row,
6299 &snapshot,
6300 &self.style,
6301 editor_width,
6302 is_row_soft_wrapped,
6303 cx,
6304 );
6305 for line_with_invisibles in &line_layouts {
6306 if line_with_invisibles.width > max_visible_line_width {
6307 max_visible_line_width = line_with_invisibles.width;
6308 }
6309 }
6310
6311 let longest_line_width = layout_line(
6312 snapshot.longest_row(),
6313 &snapshot,
6314 &style,
6315 editor_width,
6316 is_row_soft_wrapped,
6317 cx,
6318 )
6319 .width;
6320
6321 let scrollbar_range_data = ScrollbarRangeData::new(
6322 scrollbar_bounds,
6323 letter_size,
6324 &snapshot,
6325 longest_line_width,
6326 &style,
6327 cx,
6328 );
6329
6330 let scroll_range_bounds = scrollbar_range_data.scroll_range;
6331 let mut scroll_width = scroll_range_bounds.size.width;
6332
6333 let sticky_header_excerpt = if snapshot.buffer_snapshot.show_headers() {
6334 snapshot.sticky_header_excerpt(start_row)
6335 } else {
6336 None
6337 };
6338 let sticky_header_excerpt_id =
6339 sticky_header_excerpt.as_ref().map(|top| top.excerpt.id);
6340
6341 let blocks = cx.with_element_namespace("blocks", |cx| {
6342 self.render_blocks(
6343 start_row..end_row,
6344 &snapshot,
6345 &hitbox,
6346 &text_hitbox,
6347 editor_width,
6348 &mut scroll_width,
6349 &gutter_dimensions,
6350 em_width,
6351 gutter_dimensions.full_width(),
6352 line_height,
6353 &line_layouts,
6354 &local_selections,
6355 &selected_buffer_ids,
6356 is_row_soft_wrapped,
6357 sticky_header_excerpt_id,
6358 cx,
6359 )
6360 });
6361 let mut blocks = match blocks {
6362 Ok(blocks) => blocks,
6363 Err(resized_blocks) => {
6364 self.editor.update(cx, |editor, cx| {
6365 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
6366 });
6367 return self.prepaint(None, bounds, &mut (), cx);
6368 }
6369 };
6370
6371 let sticky_buffer_header = sticky_header_excerpt.map(|sticky_header_excerpt| {
6372 cx.with_element_namespace("blocks", |cx| {
6373 self.layout_sticky_buffer_header(
6374 sticky_header_excerpt,
6375 scroll_position.y,
6376 line_height,
6377 &snapshot,
6378 &hitbox,
6379 &selected_buffer_ids,
6380 cx,
6381 )
6382 })
6383 });
6384
6385 let start_buffer_row =
6386 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
6387 let end_buffer_row =
6388 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
6389
6390 let scroll_max = point(
6391 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6392 max_row.as_f32(),
6393 );
6394
6395 self.editor.update(cx, |editor, cx| {
6396 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6397
6398 let autoscrolled = if autoscroll_horizontally {
6399 editor.autoscroll_horizontally(
6400 start_row,
6401 text_hitbox.size.width,
6402 scroll_width,
6403 em_width,
6404 &line_layouts,
6405 cx,
6406 )
6407 } else {
6408 false
6409 };
6410
6411 if clamped || autoscrolled {
6412 snapshot = editor.snapshot(cx);
6413 scroll_position = snapshot.scroll_position();
6414 }
6415 });
6416
6417 let scroll_pixel_position = point(
6418 scroll_position.x * em_width,
6419 scroll_position.y * line_height,
6420 );
6421
6422 let indent_guides = self.layout_indent_guides(
6423 content_origin,
6424 text_hitbox.origin,
6425 start_buffer_row..end_buffer_row,
6426 scroll_pixel_position,
6427 line_height,
6428 &snapshot,
6429 cx,
6430 );
6431
6432 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6433 self.prepaint_crease_trailers(
6434 crease_trailers,
6435 &line_layouts,
6436 line_height,
6437 content_origin,
6438 scroll_pixel_position,
6439 em_width,
6440 cx,
6441 )
6442 });
6443
6444 let mut inline_blame = None;
6445 if let Some(newest_selection_head) = newest_selection_head {
6446 let display_row = newest_selection_head.row();
6447 if (start_row..end_row).contains(&display_row) {
6448 let line_ix = display_row.minus(start_row) as usize;
6449 let line_layout = &line_layouts[line_ix];
6450 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
6451 inline_blame = self.layout_inline_blame(
6452 display_row,
6453 &snapshot.display_snapshot,
6454 line_layout,
6455 crease_trailer_layout,
6456 em_width,
6457 content_origin,
6458 scroll_pixel_position,
6459 line_height,
6460 cx,
6461 );
6462 }
6463 }
6464
6465 let blamed_display_rows = self.layout_blame_entries(
6466 buffer_rows.into_iter(),
6467 em_width,
6468 scroll_position,
6469 line_height,
6470 &gutter_hitbox,
6471 gutter_dimensions.git_blame_entries_width,
6472 cx,
6473 );
6474
6475 let scroll_max = point(
6476 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6477 max_scroll_top,
6478 );
6479
6480 self.editor.update(cx, |editor, cx| {
6481 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6482
6483 let autoscrolled = if autoscroll_horizontally {
6484 editor.autoscroll_horizontally(
6485 start_row,
6486 text_hitbox.size.width,
6487 scroll_width,
6488 em_width,
6489 &line_layouts,
6490 cx,
6491 )
6492 } else {
6493 false
6494 };
6495
6496 if clamped || autoscrolled {
6497 snapshot = editor.snapshot(cx);
6498 scroll_position = snapshot.scroll_position();
6499 }
6500 });
6501
6502 let line_elements = self.prepaint_lines(
6503 start_row,
6504 &mut line_layouts,
6505 line_height,
6506 scroll_pixel_position,
6507 content_origin,
6508 cx,
6509 );
6510
6511 let mut block_start_rows = HashSet::default();
6512
6513 cx.with_element_namespace("blocks", |cx| {
6514 self.layout_blocks(
6515 &mut blocks,
6516 &mut block_start_rows,
6517 &hitbox,
6518 line_height,
6519 scroll_pixel_position,
6520 cx,
6521 );
6522 });
6523
6524 let cursors = self.collect_cursors(&snapshot, cx);
6525 let visible_row_range = start_row..end_row;
6526 let non_visible_cursors = cursors
6527 .iter()
6528 .any(move |c| !visible_row_range.contains(&c.0.row()));
6529
6530 let visible_cursors = self.layout_visible_cursors(
6531 &snapshot,
6532 &selections,
6533 &block_start_rows,
6534 start_row..end_row,
6535 &line_layouts,
6536 &text_hitbox,
6537 content_origin,
6538 scroll_position,
6539 scroll_pixel_position,
6540 line_height,
6541 em_width,
6542 em_advance,
6543 autoscroll_containing_element,
6544 cx,
6545 );
6546
6547 let scrollbars_layout = self.layout_scrollbars(
6548 &snapshot,
6549 scrollbar_range_data,
6550 scroll_position,
6551 non_visible_cursors,
6552 cx,
6553 );
6554
6555 let gutter_settings = EditorSettings::get_global(cx).gutter;
6556
6557 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
6558 editor
6559 .diff_map
6560 .hunks(false)
6561 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
6562 .map(|expanded_hunk| {
6563 let start_row = expanded_hunk
6564 .hunk_range
6565 .start
6566 .to_display_point(&snapshot)
6567 .row();
6568 (start_row, expanded_hunk.clone())
6569 })
6570 .collect::<HashMap<_, _>>()
6571 });
6572
6573 let rows_with_hunk_bounds = display_hunks
6574 .iter()
6575 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
6576 .fold(
6577 HashMap::default(),
6578 |mut rows_with_hunk_bounds, (hunk, bounds)| {
6579 match hunk {
6580 DisplayDiffHunk::Folded { display_row } => {
6581 rows_with_hunk_bounds.insert(*display_row, bounds);
6582 }
6583 DisplayDiffHunk::Unfolded {
6584 display_row_range, ..
6585 } => {
6586 for display_row in display_row_range.iter_rows() {
6587 rows_with_hunk_bounds.insert(display_row, bounds);
6588 }
6589 }
6590 }
6591 rows_with_hunk_bounds
6592 },
6593 );
6594 let mut code_actions_indicator = None;
6595 if let Some(newest_selection_head) = newest_selection_head {
6596 if (start_row..end_row).contains(&newest_selection_head.row()) {
6597 self.layout_context_menu(
6598 line_height,
6599 &text_hitbox,
6600 content_origin,
6601 start_row,
6602 scroll_pixel_position,
6603 &line_layouts,
6604 newest_selection_head,
6605 gutter_dimensions.width - gutter_dimensions.left_padding,
6606 cx,
6607 );
6608
6609 let show_code_actions = snapshot
6610 .show_code_actions
6611 .unwrap_or(gutter_settings.code_actions);
6612 if show_code_actions {
6613 let newest_selection_point =
6614 newest_selection_head.to_point(&snapshot.display_snapshot);
6615 let newest_selection_display_row =
6616 newest_selection_point.to_display_point(&snapshot).row();
6617 if !expanded_add_hunks_by_rows
6618 .contains_key(&newest_selection_display_row)
6619 {
6620 if !snapshot
6621 .is_line_folded(MultiBufferRow(newest_selection_point.row))
6622 {
6623 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
6624 MultiBufferRow(newest_selection_point.row),
6625 );
6626 if let Some((buffer, range)) = buffer {
6627 let buffer_id = buffer.remote_id();
6628 let row = range.start.row;
6629 let has_test_indicator = self
6630 .editor
6631 .read(cx)
6632 .tasks
6633 .contains_key(&(buffer_id, row));
6634
6635 if !has_test_indicator {
6636 code_actions_indicator = self
6637 .layout_code_actions_indicator(
6638 line_height,
6639 newest_selection_head,
6640 scroll_pixel_position,
6641 &gutter_dimensions,
6642 &gutter_hitbox,
6643 &rows_with_hunk_bounds,
6644 cx,
6645 );
6646 }
6647 }
6648 }
6649 }
6650 }
6651 }
6652 }
6653
6654 let test_indicators = if gutter_settings.runnables {
6655 self.layout_run_indicators(
6656 line_height,
6657 start_row..end_row,
6658 scroll_pixel_position,
6659 &gutter_dimensions,
6660 &gutter_hitbox,
6661 &rows_with_hunk_bounds,
6662 &snapshot,
6663 cx,
6664 )
6665 } else {
6666 Vec::new()
6667 };
6668
6669 self.layout_signature_help(
6670 &hitbox,
6671 content_origin,
6672 scroll_pixel_position,
6673 newest_selection_head,
6674 start_row,
6675 &line_layouts,
6676 line_height,
6677 em_width,
6678 cx,
6679 );
6680
6681 if !cx.has_active_drag() {
6682 self.layout_hover_popovers(
6683 &snapshot,
6684 &hitbox,
6685 &text_hitbox,
6686 start_row..end_row,
6687 content_origin,
6688 scroll_pixel_position,
6689 &line_layouts,
6690 line_height,
6691 em_width,
6692 cx,
6693 );
6694 }
6695
6696 let inline_completion_popover = self.layout_inline_completion_popover(
6697 &text_hitbox.bounds,
6698 &snapshot,
6699 start_row..end_row,
6700 scroll_position.y,
6701 scroll_position.y + height_in_lines,
6702 &line_layouts,
6703 line_height,
6704 scroll_pixel_position,
6705 editor_width,
6706 &style,
6707 cx,
6708 );
6709
6710 let mouse_context_menu = self.layout_mouse_context_menu(
6711 &snapshot,
6712 start_row..end_row,
6713 content_origin,
6714 cx,
6715 );
6716
6717 cx.with_element_namespace("crease_toggles", |cx| {
6718 self.prepaint_crease_toggles(
6719 &mut crease_toggles,
6720 line_height,
6721 &gutter_dimensions,
6722 gutter_settings,
6723 scroll_pixel_position,
6724 &gutter_hitbox,
6725 cx,
6726 )
6727 });
6728
6729 let invisible_symbol_font_size = font_size / 2.;
6730 let tab_invisible = cx
6731 .text_system()
6732 .shape_line(
6733 "→".into(),
6734 invisible_symbol_font_size,
6735 &[TextRun {
6736 len: "→".len(),
6737 font: self.style.text.font(),
6738 color: cx.theme().colors().editor_invisible,
6739 background_color: None,
6740 underline: None,
6741 strikethrough: None,
6742 }],
6743 )
6744 .unwrap();
6745 let space_invisible = cx
6746 .text_system()
6747 .shape_line(
6748 "•".into(),
6749 invisible_symbol_font_size,
6750 &[TextRun {
6751 len: "•".len(),
6752 font: self.style.text.font(),
6753 color: cx.theme().colors().editor_invisible,
6754 background_color: None,
6755 underline: None,
6756 strikethrough: None,
6757 }],
6758 )
6759 .unwrap();
6760
6761 EditorLayout {
6762 mode: snapshot.mode,
6763 position_map: Rc::new(PositionMap {
6764 size: bounds.size,
6765 scroll_pixel_position,
6766 scroll_max,
6767 line_layouts,
6768 line_height,
6769 em_width,
6770 em_advance,
6771 snapshot,
6772 }),
6773 visible_display_row_range: start_row..end_row,
6774 wrap_guides,
6775 indent_guides,
6776 hitbox,
6777 text_hitbox,
6778 gutter_hitbox,
6779 display_hunks,
6780 content_origin,
6781 scrollbars_layout,
6782 active_rows,
6783 highlighted_rows,
6784 highlighted_ranges,
6785 highlighted_gutter_ranges,
6786 redacted_ranges,
6787 line_elements,
6788 line_numbers,
6789 blamed_display_rows,
6790 inline_blame,
6791 blocks,
6792 cursors,
6793 visible_cursors,
6794 selections,
6795 inline_completion_popover,
6796 mouse_context_menu,
6797 test_indicators,
6798 code_actions_indicator,
6799 crease_toggles,
6800 crease_trailers,
6801 tab_invisible,
6802 space_invisible,
6803 sticky_buffer_header,
6804 }
6805 })
6806 })
6807 })
6808 }
6809
6810 fn paint(
6811 &mut self,
6812 _: Option<&GlobalElementId>,
6813 bounds: Bounds<gpui::Pixels>,
6814 _: &mut Self::RequestLayoutState,
6815 layout: &mut Self::PrepaintState,
6816 cx: &mut WindowContext,
6817 ) {
6818 let focus_handle = self.editor.focus_handle(cx);
6819 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
6820
6821 cx.set_key_context(key_context);
6822 cx.handle_input(
6823 &focus_handle,
6824 ElementInputHandler::new(bounds, self.editor.clone()),
6825 );
6826 self.register_actions(cx);
6827 self.register_key_listeners(cx, layout);
6828
6829 let text_style = TextStyleRefinement {
6830 font_size: Some(self.style.text.font_size),
6831 line_height: Some(self.style.text.line_height),
6832 ..Default::default()
6833 };
6834 let hovered_hunk = layout
6835 .display_hunks
6836 .iter()
6837 .find_map(|(hunk, hunk_hitbox)| match hunk {
6838 DisplayDiffHunk::Folded { .. } => None,
6839 DisplayDiffHunk::Unfolded {
6840 diff_base_byte_range,
6841 multi_buffer_range,
6842 status,
6843 ..
6844 } => {
6845 if hunk_hitbox
6846 .as_ref()
6847 .map(|hitbox| hitbox.is_hovered(cx))
6848 .unwrap_or(false)
6849 {
6850 Some(HoveredHunk {
6851 status: *status,
6852 multi_buffer_range: multi_buffer_range.clone(),
6853 diff_base_byte_range: diff_base_byte_range.clone(),
6854 })
6855 } else {
6856 None
6857 }
6858 }
6859 });
6860 let rem_size = self.rem_size(cx);
6861 cx.with_rem_size(rem_size, |cx| {
6862 cx.with_text_style(Some(text_style), |cx| {
6863 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6864 self.paint_mouse_listeners(layout, hovered_hunk, cx);
6865 self.paint_background(layout, cx);
6866 self.paint_indent_guides(layout, cx);
6867
6868 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6869 self.paint_blamed_display_rows(layout, cx);
6870 self.paint_line_numbers(layout, cx);
6871 }
6872
6873 self.paint_text(layout, cx);
6874
6875 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6876 self.paint_gutter_highlights(layout, cx);
6877 self.paint_gutter_indicators(layout, cx);
6878 }
6879
6880 if !layout.blocks.is_empty() {
6881 cx.with_element_namespace("blocks", |cx| {
6882 self.paint_blocks(layout, cx);
6883 });
6884 }
6885
6886 cx.with_element_namespace("blocks", |cx| {
6887 if let Some(mut sticky_header) = layout.sticky_buffer_header.take() {
6888 sticky_header.paint(cx)
6889 }
6890 });
6891
6892 self.paint_scrollbars(layout, cx);
6893 self.paint_inline_completion_popover(layout, cx);
6894 self.paint_mouse_context_menu(layout, cx);
6895 });
6896 })
6897 })
6898 }
6899}
6900
6901pub(super) fn gutter_bounds(
6902 editor_bounds: Bounds<Pixels>,
6903 gutter_dimensions: GutterDimensions,
6904) -> Bounds<Pixels> {
6905 Bounds {
6906 origin: editor_bounds.origin,
6907 size: size(gutter_dimensions.width, editor_bounds.size.height),
6908 }
6909}
6910
6911struct ScrollbarRangeData {
6912 scrollbar_bounds: Bounds<Pixels>,
6913 scroll_range: Bounds<Pixels>,
6914 letter_size: Size<Pixels>,
6915}
6916
6917impl ScrollbarRangeData {
6918 pub fn new(
6919 scrollbar_bounds: Bounds<Pixels>,
6920 letter_size: Size<Pixels>,
6921 snapshot: &EditorSnapshot,
6922 longest_line_width: Pixels,
6923 style: &EditorStyle,
6924 cx: &WindowContext,
6925 ) -> ScrollbarRangeData {
6926 // TODO: Simplify this function down, it requires a lot of parameters
6927 let max_row = snapshot.max_point().row();
6928 let text_bounds_size = size(longest_line_width, max_row.0 as f32 * letter_size.height);
6929
6930 let scrollbar_width = style.scrollbar_width;
6931
6932 let settings = EditorSettings::get_global(cx);
6933 let scroll_beyond_last_line: Pixels = match settings.scroll_beyond_last_line {
6934 ScrollBeyondLastLine::OnePage => px(scrollbar_bounds.size.height / letter_size.height),
6935 ScrollBeyondLastLine::Off => px(1.),
6936 ScrollBeyondLastLine::VerticalScrollMargin => px(1.0 + settings.vertical_scroll_margin),
6937 };
6938
6939 let overscroll = size(
6940 scrollbar_width + (letter_size.width / 2.0),
6941 letter_size.height * scroll_beyond_last_line,
6942 );
6943
6944 let scroll_range = Bounds {
6945 origin: scrollbar_bounds.origin,
6946 size: text_bounds_size + overscroll,
6947 };
6948
6949 ScrollbarRangeData {
6950 scrollbar_bounds,
6951 scroll_range,
6952 letter_size,
6953 }
6954 }
6955}
6956
6957impl IntoElement for EditorElement {
6958 type Element = Self;
6959
6960 fn into_element(self) -> Self::Element {
6961 self
6962 }
6963}
6964
6965pub struct EditorLayout {
6966 position_map: Rc<PositionMap>,
6967 hitbox: Hitbox,
6968 text_hitbox: Hitbox,
6969 gutter_hitbox: Hitbox,
6970 content_origin: gpui::Point<Pixels>,
6971 scrollbars_layout: AxisPair<Option<ScrollbarLayout>>,
6972 mode: EditorMode,
6973 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
6974 indent_guides: Option<Vec<IndentGuideLayout>>,
6975 visible_display_row_range: Range<DisplayRow>,
6976 active_rows: BTreeMap<DisplayRow, bool>,
6977 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
6978 line_elements: SmallVec<[AnyElement; 1]>,
6979 line_numbers: Arc<HashMap<MultiBufferRow, (ShapedLine, Option<Hitbox>)>>,
6980 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
6981 blamed_display_rows: Option<Vec<AnyElement>>,
6982 inline_blame: Option<AnyElement>,
6983 blocks: Vec<BlockLayout>,
6984 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6985 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6986 redacted_ranges: Vec<Range<DisplayPoint>>,
6987 cursors: Vec<(DisplayPoint, Hsla)>,
6988 visible_cursors: Vec<CursorLayout>,
6989 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
6990 code_actions_indicator: Option<AnyElement>,
6991 test_indicators: Vec<AnyElement>,
6992 crease_toggles: Vec<Option<AnyElement>>,
6993 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
6994 inline_completion_popover: Option<AnyElement>,
6995 mouse_context_menu: Option<AnyElement>,
6996 tab_invisible: ShapedLine,
6997 space_invisible: ShapedLine,
6998 sticky_buffer_header: Option<AnyElement>,
6999}
7000
7001impl EditorLayout {
7002 fn line_end_overshoot(&self) -> Pixels {
7003 0.15 * self.position_map.line_height
7004 }
7005}
7006
7007struct ColoredRange<T> {
7008 start: T,
7009 end: T,
7010 color: Hsla,
7011}
7012
7013#[derive(Clone)]
7014struct ScrollbarLayout {
7015 hitbox: Hitbox,
7016 visible_range: Range<f32>,
7017 visible: bool,
7018 text_unit_size: Pixels,
7019 thumb_size: Pixels,
7020 axis: Axis,
7021}
7022
7023impl ScrollbarLayout {
7024 const BORDER_WIDTH: Pixels = px(1.0);
7025 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
7026 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
7027 // const MIN_THUMB_HEIGHT: Pixels = px(20.0);
7028
7029 fn thumb_bounds(&self) -> Bounds<Pixels> {
7030 match self.axis {
7031 Axis::Vertical => {
7032 let thumb_top = self.y_for_row(self.visible_range.start);
7033 let thumb_bottom = thumb_top + self.thumb_size;
7034 Bounds::from_corners(
7035 point(self.hitbox.left(), thumb_top),
7036 point(self.hitbox.right(), thumb_bottom),
7037 )
7038 }
7039 Axis::Horizontal => {
7040 let thumb_left =
7041 self.hitbox.left() + self.visible_range.start * self.text_unit_size;
7042 let thumb_right = thumb_left + self.thumb_size;
7043 Bounds::from_corners(
7044 point(thumb_left, self.hitbox.top()),
7045 point(thumb_right, self.hitbox.bottom()),
7046 )
7047 }
7048 }
7049 }
7050
7051 fn y_for_row(&self, row: f32) -> Pixels {
7052 self.hitbox.top() + row * self.text_unit_size
7053 }
7054
7055 fn marker_quads_for_ranges(
7056 &self,
7057 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
7058 column: Option<usize>,
7059 ) -> Vec<PaintQuad> {
7060 struct MinMax {
7061 min: Pixels,
7062 max: Pixels,
7063 }
7064 let (x_range, height_limit) = if let Some(column) = column {
7065 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
7066 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
7067 let end = start + column_width;
7068 (
7069 Range { start, end },
7070 MinMax {
7071 min: Self::MIN_MARKER_HEIGHT,
7072 max: px(f32::MAX),
7073 },
7074 )
7075 } else {
7076 (
7077 Range {
7078 start: Self::BORDER_WIDTH,
7079 end: self.hitbox.size.width,
7080 },
7081 MinMax {
7082 min: Self::LINE_MARKER_HEIGHT,
7083 max: Self::LINE_MARKER_HEIGHT,
7084 },
7085 )
7086 };
7087
7088 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
7089 let mut pixel_ranges = row_ranges
7090 .into_iter()
7091 .map(|range| {
7092 let start_y = row_to_y(range.start);
7093 let end_y = row_to_y(range.end)
7094 + self
7095 .text_unit_size
7096 .max(height_limit.min)
7097 .min(height_limit.max);
7098 ColoredRange {
7099 start: start_y,
7100 end: end_y,
7101 color: range.color,
7102 }
7103 })
7104 .peekable();
7105
7106 let mut quads = Vec::new();
7107 while let Some(mut pixel_range) = pixel_ranges.next() {
7108 while let Some(next_pixel_range) = pixel_ranges.peek() {
7109 if pixel_range.end >= next_pixel_range.start - px(1.0)
7110 && pixel_range.color == next_pixel_range.color
7111 {
7112 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
7113 pixel_ranges.next();
7114 } else {
7115 break;
7116 }
7117 }
7118
7119 let bounds = Bounds::from_corners(
7120 point(x_range.start, pixel_range.start),
7121 point(x_range.end, pixel_range.end),
7122 );
7123 quads.push(quad(
7124 bounds,
7125 Corners::default(),
7126 pixel_range.color,
7127 Edges::default(),
7128 Hsla::transparent_black(),
7129 ));
7130 }
7131
7132 quads
7133 }
7134}
7135
7136struct CreaseTrailerLayout {
7137 element: AnyElement,
7138 bounds: Bounds<Pixels>,
7139}
7140
7141struct PositionMap {
7142 size: Size<Pixels>,
7143 line_height: Pixels,
7144 scroll_pixel_position: gpui::Point<Pixels>,
7145 scroll_max: gpui::Point<f32>,
7146 em_width: Pixels,
7147 em_advance: Pixels,
7148 line_layouts: Vec<LineWithInvisibles>,
7149 snapshot: EditorSnapshot,
7150}
7151
7152#[derive(Debug, Copy, Clone)]
7153pub struct PointForPosition {
7154 pub previous_valid: DisplayPoint,
7155 pub next_valid: DisplayPoint,
7156 pub exact_unclipped: DisplayPoint,
7157 pub column_overshoot_after_line_end: u32,
7158}
7159
7160impl PointForPosition {
7161 pub fn as_valid(&self) -> Option<DisplayPoint> {
7162 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
7163 Some(self.previous_valid)
7164 } else {
7165 None
7166 }
7167 }
7168}
7169
7170impl PositionMap {
7171 fn point_for_position(
7172 &self,
7173 text_bounds: Bounds<Pixels>,
7174 position: gpui::Point<Pixels>,
7175 ) -> PointForPosition {
7176 let scroll_position = self.snapshot.scroll_position();
7177 let position = position - text_bounds.origin;
7178 let y = position.y.max(px(0.)).min(self.size.height);
7179 let x = position.x + (scroll_position.x * self.em_width);
7180 let row = ((y / self.line_height) + scroll_position.y) as u32;
7181
7182 let (column, x_overshoot_after_line_end) = if let Some(line) = self
7183 .line_layouts
7184 .get(row as usize - scroll_position.y as usize)
7185 {
7186 if let Some(ix) = line.index_for_x(x) {
7187 (ix as u32, px(0.))
7188 } else {
7189 (line.len as u32, px(0.).max(x - line.width))
7190 }
7191 } else {
7192 (0, x)
7193 };
7194
7195 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
7196 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
7197 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
7198
7199 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
7200 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
7201 PointForPosition {
7202 previous_valid,
7203 next_valid,
7204 exact_unclipped,
7205 column_overshoot_after_line_end,
7206 }
7207 }
7208}
7209
7210struct BlockLayout {
7211 id: BlockId,
7212 row: Option<DisplayRow>,
7213 element: AnyElement,
7214 available_space: Size<AvailableSpace>,
7215 style: BlockStyle,
7216}
7217
7218fn layout_line(
7219 row: DisplayRow,
7220 snapshot: &EditorSnapshot,
7221 style: &EditorStyle,
7222 text_width: Pixels,
7223 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
7224 cx: &mut WindowContext,
7225) -> LineWithInvisibles {
7226 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
7227 LineWithInvisibles::from_chunks(
7228 chunks,
7229 &style,
7230 MAX_LINE_LEN,
7231 1,
7232 snapshot.mode,
7233 text_width,
7234 is_row_soft_wrapped,
7235 cx,
7236 )
7237 .pop()
7238 .unwrap()
7239}
7240
7241#[derive(Debug)]
7242pub struct IndentGuideLayout {
7243 origin: gpui::Point<Pixels>,
7244 length: Pixels,
7245 single_indent_width: Pixels,
7246 depth: u32,
7247 active: bool,
7248 settings: IndentGuideSettings,
7249}
7250
7251pub struct CursorLayout {
7252 origin: gpui::Point<Pixels>,
7253 block_width: Pixels,
7254 line_height: Pixels,
7255 color: Hsla,
7256 shape: CursorShape,
7257 block_text: Option<ShapedLine>,
7258 cursor_name: Option<AnyElement>,
7259}
7260
7261#[derive(Debug)]
7262pub struct CursorName {
7263 string: SharedString,
7264 color: Hsla,
7265 is_top_row: bool,
7266}
7267
7268impl CursorLayout {
7269 pub fn new(
7270 origin: gpui::Point<Pixels>,
7271 block_width: Pixels,
7272 line_height: Pixels,
7273 color: Hsla,
7274 shape: CursorShape,
7275 block_text: Option<ShapedLine>,
7276 ) -> CursorLayout {
7277 CursorLayout {
7278 origin,
7279 block_width,
7280 line_height,
7281 color,
7282 shape,
7283 block_text,
7284 cursor_name: None,
7285 }
7286 }
7287
7288 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7289 Bounds {
7290 origin: self.origin + origin,
7291 size: size(self.block_width, self.line_height),
7292 }
7293 }
7294
7295 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
7296 match self.shape {
7297 CursorShape::Bar => Bounds {
7298 origin: self.origin + origin,
7299 size: size(px(2.0), self.line_height),
7300 },
7301 CursorShape::Block | CursorShape::Hollow => Bounds {
7302 origin: self.origin + origin,
7303 size: size(self.block_width, self.line_height),
7304 },
7305 CursorShape::Underline => Bounds {
7306 origin: self.origin
7307 + origin
7308 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
7309 size: size(self.block_width, px(2.0)),
7310 },
7311 }
7312 }
7313
7314 pub fn layout(
7315 &mut self,
7316 origin: gpui::Point<Pixels>,
7317 cursor_name: Option<CursorName>,
7318 cx: &mut WindowContext,
7319 ) {
7320 if let Some(cursor_name) = cursor_name {
7321 let bounds = self.bounds(origin);
7322 let text_size = self.line_height / 1.5;
7323
7324 let name_origin = if cursor_name.is_top_row {
7325 point(bounds.right() - px(1.), bounds.top())
7326 } else {
7327 match self.shape {
7328 CursorShape::Bar => point(
7329 bounds.right() - px(2.),
7330 bounds.top() - text_size / 2. - px(1.),
7331 ),
7332 _ => point(
7333 bounds.right() - px(1.),
7334 bounds.top() - text_size / 2. - px(1.),
7335 ),
7336 }
7337 };
7338 let mut name_element = div()
7339 .bg(self.color)
7340 .text_size(text_size)
7341 .px_0p5()
7342 .line_height(text_size + px(2.))
7343 .text_color(cursor_name.color)
7344 .child(cursor_name.string.clone())
7345 .into_any_element();
7346
7347 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
7348
7349 self.cursor_name = Some(name_element);
7350 }
7351 }
7352
7353 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
7354 let bounds = self.bounds(origin);
7355
7356 //Draw background or border quad
7357 let cursor = if matches!(self.shape, CursorShape::Hollow) {
7358 outline(bounds, self.color)
7359 } else {
7360 fill(bounds, self.color)
7361 };
7362
7363 if let Some(name) = &mut self.cursor_name {
7364 name.paint(cx);
7365 }
7366
7367 cx.paint_quad(cursor);
7368
7369 if let Some(block_text) = &self.block_text {
7370 block_text
7371 .paint(self.origin + origin, self.line_height, cx)
7372 .log_err();
7373 }
7374 }
7375
7376 pub fn shape(&self) -> CursorShape {
7377 self.shape
7378 }
7379}
7380
7381#[derive(Debug)]
7382pub struct HighlightedRange {
7383 pub start_y: Pixels,
7384 pub line_height: Pixels,
7385 pub lines: Vec<HighlightedRangeLine>,
7386 pub color: Hsla,
7387 pub corner_radius: Pixels,
7388}
7389
7390#[derive(Debug)]
7391pub struct HighlightedRangeLine {
7392 pub start_x: Pixels,
7393 pub end_x: Pixels,
7394}
7395
7396impl HighlightedRange {
7397 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
7398 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
7399 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
7400 self.paint_lines(
7401 self.start_y + self.line_height,
7402 &self.lines[1..],
7403 bounds,
7404 cx,
7405 );
7406 } else {
7407 self.paint_lines(self.start_y, &self.lines, bounds, cx);
7408 }
7409 }
7410
7411 fn paint_lines(
7412 &self,
7413 start_y: Pixels,
7414 lines: &[HighlightedRangeLine],
7415 _bounds: Bounds<Pixels>,
7416 cx: &mut WindowContext,
7417 ) {
7418 if lines.is_empty() {
7419 return;
7420 }
7421
7422 let first_line = lines.first().unwrap();
7423 let last_line = lines.last().unwrap();
7424
7425 let first_top_left = point(first_line.start_x, start_y);
7426 let first_top_right = point(first_line.end_x, start_y);
7427
7428 let curve_height = point(Pixels::ZERO, self.corner_radius);
7429 let curve_width = |start_x: Pixels, end_x: Pixels| {
7430 let max = (end_x - start_x) / 2.;
7431 let width = if max < self.corner_radius {
7432 max
7433 } else {
7434 self.corner_radius
7435 };
7436
7437 point(width, Pixels::ZERO)
7438 };
7439
7440 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
7441 let mut path = gpui::Path::new(first_top_right - top_curve_width);
7442 path.curve_to(first_top_right + curve_height, first_top_right);
7443
7444 let mut iter = lines.iter().enumerate().peekable();
7445 while let Some((ix, line)) = iter.next() {
7446 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
7447
7448 if let Some((_, next_line)) = iter.peek() {
7449 let next_top_right = point(next_line.end_x, bottom_right.y);
7450
7451 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
7452 Ordering::Equal => {
7453 path.line_to(bottom_right);
7454 }
7455 Ordering::Less => {
7456 let curve_width = curve_width(next_top_right.x, bottom_right.x);
7457 path.line_to(bottom_right - curve_height);
7458 if self.corner_radius > Pixels::ZERO {
7459 path.curve_to(bottom_right - curve_width, bottom_right);
7460 }
7461 path.line_to(next_top_right + curve_width);
7462 if self.corner_radius > Pixels::ZERO {
7463 path.curve_to(next_top_right + curve_height, next_top_right);
7464 }
7465 }
7466 Ordering::Greater => {
7467 let curve_width = curve_width(bottom_right.x, next_top_right.x);
7468 path.line_to(bottom_right - curve_height);
7469 if self.corner_radius > Pixels::ZERO {
7470 path.curve_to(bottom_right + curve_width, bottom_right);
7471 }
7472 path.line_to(next_top_right - curve_width);
7473 if self.corner_radius > Pixels::ZERO {
7474 path.curve_to(next_top_right + curve_height, next_top_right);
7475 }
7476 }
7477 }
7478 } else {
7479 let curve_width = curve_width(line.start_x, line.end_x);
7480 path.line_to(bottom_right - curve_height);
7481 if self.corner_radius > Pixels::ZERO {
7482 path.curve_to(bottom_right - curve_width, bottom_right);
7483 }
7484
7485 let bottom_left = point(line.start_x, bottom_right.y);
7486 path.line_to(bottom_left + curve_width);
7487 if self.corner_radius > Pixels::ZERO {
7488 path.curve_to(bottom_left - curve_height, bottom_left);
7489 }
7490 }
7491 }
7492
7493 if first_line.start_x > last_line.start_x {
7494 let curve_width = curve_width(last_line.start_x, first_line.start_x);
7495 let second_top_left = point(last_line.start_x, start_y + self.line_height);
7496 path.line_to(second_top_left + curve_height);
7497 if self.corner_radius > Pixels::ZERO {
7498 path.curve_to(second_top_left + curve_width, second_top_left);
7499 }
7500 let first_bottom_left = point(first_line.start_x, second_top_left.y);
7501 path.line_to(first_bottom_left - curve_width);
7502 if self.corner_radius > Pixels::ZERO {
7503 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
7504 }
7505 }
7506
7507 path.line_to(first_top_left + curve_height);
7508 if self.corner_radius > Pixels::ZERO {
7509 path.curve_to(first_top_left + top_curve_width, first_top_left);
7510 }
7511 path.line_to(first_top_right - top_curve_width);
7512
7513 cx.paint_path(path, self.color);
7514 }
7515}
7516
7517pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7518 (delta.pow(1.5) / 100.0).into()
7519}
7520
7521fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7522 (delta.pow(1.2) / 300.0).into()
7523}
7524
7525pub fn register_action<T: Action>(
7526 view: &View<Editor>,
7527 cx: &mut WindowContext,
7528 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
7529) {
7530 let view = view.clone();
7531 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
7532 let action = action.downcast_ref().unwrap();
7533 if phase == DispatchPhase::Bubble {
7534 view.update(cx, |editor, cx| {
7535 listener(editor, action, cx);
7536 })
7537 }
7538 })
7539}
7540
7541fn compute_auto_height_layout(
7542 editor: &mut Editor,
7543 max_lines: usize,
7544 max_line_number_width: Pixels,
7545 known_dimensions: Size<Option<Pixels>>,
7546 available_width: AvailableSpace,
7547 cx: &mut ViewContext<Editor>,
7548) -> Option<Size<Pixels>> {
7549 let width = known_dimensions.width.or({
7550 if let AvailableSpace::Definite(available_width) = available_width {
7551 Some(available_width)
7552 } else {
7553 None
7554 }
7555 })?;
7556 if let Some(height) = known_dimensions.height {
7557 return Some(size(width, height));
7558 }
7559
7560 let style = editor.style.as_ref().unwrap();
7561 let font_id = cx.text_system().resolve_font(&style.text.font());
7562 let font_size = style.text.font_size.to_pixels(cx.rem_size());
7563 let line_height = style.text.line_height_in_pixels(cx.rem_size());
7564 let em_width = cx
7565 .text_system()
7566 .typographic_bounds(font_id, font_size, 'm')
7567 .unwrap()
7568 .size
7569 .width;
7570 let em_advance = cx
7571 .text_system()
7572 .advance(font_id, font_size, 'm')
7573 .unwrap()
7574 .width;
7575
7576 let mut snapshot = editor.snapshot(cx);
7577 let gutter_dimensions = snapshot.gutter_dimensions(
7578 font_id,
7579 font_size,
7580 em_width,
7581 em_advance,
7582 max_line_number_width,
7583 cx,
7584 );
7585
7586 editor.gutter_dimensions = gutter_dimensions;
7587 let text_width = width - gutter_dimensions.width;
7588 let overscroll = size(em_width, px(0.));
7589
7590 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
7591 if editor.set_wrap_width(Some(editor_width), cx) {
7592 snapshot = editor.snapshot(cx);
7593 }
7594
7595 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
7596 let height = scroll_height
7597 .max(line_height)
7598 .min(line_height * max_lines as f32);
7599
7600 Some(size(width, height))
7601}
7602
7603#[cfg(test)]
7604mod tests {
7605 use super::*;
7606 use crate::{
7607 display_map::{BlockPlacement, BlockProperties},
7608 editor_tests::{init_test, update_test_language_settings},
7609 Editor, MultiBuffer,
7610 };
7611 use gpui::{TestAppContext, VisualTestContext};
7612 use language::language_settings;
7613 use log::info;
7614 use similar::DiffableStr;
7615 use std::num::NonZeroU32;
7616 use util::test::sample_text;
7617
7618 #[gpui::test]
7619 fn test_shape_line_numbers(cx: &mut TestAppContext) {
7620 init_test(cx, |_| {});
7621 let window = cx.add_window(|cx| {
7622 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
7623 Editor::new(EditorMode::Full, buffer, None, true, cx)
7624 });
7625
7626 let editor = window.root(cx).unwrap();
7627 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7628 let line_height = window
7629 .update(cx, |_, cx| style.text.line_height_in_pixels(cx.rem_size()))
7630 .unwrap();
7631 let element = EditorElement::new(&editor, style);
7632 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
7633
7634 let layouts = cx
7635 .update_window(*window, |_, cx| {
7636 element.layout_line_numbers(
7637 None,
7638 GutterDimensions {
7639 left_padding: Pixels::ZERO,
7640 right_padding: Pixels::ZERO,
7641 width: px(30.0),
7642 margin: Pixels::ZERO,
7643 git_blame_entries_width: None,
7644 },
7645 line_height,
7646 gpui::Point::default(),
7647 DisplayRow(0)..DisplayRow(6),
7648 (0..6).map(MultiBufferRow).map(Some),
7649 &Default::default(),
7650 Some(DisplayPoint::new(DisplayRow(0), 0)),
7651 &snapshot,
7652 cx,
7653 )
7654 })
7655 .unwrap();
7656 assert_eq!(layouts.len(), 6);
7657
7658 let relative_rows = window
7659 .update(cx, |editor, cx| {
7660 let snapshot = editor.snapshot(cx);
7661 element.calculate_relative_line_numbers(
7662 &snapshot,
7663 &(DisplayRow(0)..DisplayRow(6)),
7664 Some(DisplayRow(3)),
7665 )
7666 })
7667 .unwrap();
7668 assert_eq!(relative_rows[&DisplayRow(0)], 3);
7669 assert_eq!(relative_rows[&DisplayRow(1)], 2);
7670 assert_eq!(relative_rows[&DisplayRow(2)], 1);
7671 // current line has no relative number
7672 assert_eq!(relative_rows[&DisplayRow(4)], 1);
7673 assert_eq!(relative_rows[&DisplayRow(5)], 2);
7674
7675 // works if cursor is before screen
7676 let relative_rows = window
7677 .update(cx, |editor, cx| {
7678 let snapshot = editor.snapshot(cx);
7679 element.calculate_relative_line_numbers(
7680 &snapshot,
7681 &(DisplayRow(3)..DisplayRow(6)),
7682 Some(DisplayRow(1)),
7683 )
7684 })
7685 .unwrap();
7686 assert_eq!(relative_rows.len(), 3);
7687 assert_eq!(relative_rows[&DisplayRow(3)], 2);
7688 assert_eq!(relative_rows[&DisplayRow(4)], 3);
7689 assert_eq!(relative_rows[&DisplayRow(5)], 4);
7690
7691 // works if cursor is after screen
7692 let relative_rows = window
7693 .update(cx, |editor, cx| {
7694 let snapshot = editor.snapshot(cx);
7695 element.calculate_relative_line_numbers(
7696 &snapshot,
7697 &(DisplayRow(0)..DisplayRow(3)),
7698 Some(DisplayRow(6)),
7699 )
7700 })
7701 .unwrap();
7702 assert_eq!(relative_rows.len(), 3);
7703 assert_eq!(relative_rows[&DisplayRow(0)], 5);
7704 assert_eq!(relative_rows[&DisplayRow(1)], 4);
7705 assert_eq!(relative_rows[&DisplayRow(2)], 3);
7706 }
7707
7708 #[gpui::test]
7709 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
7710 init_test(cx, |_| {});
7711
7712 let window = cx.add_window(|cx| {
7713 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
7714 Editor::new(EditorMode::Full, buffer, None, true, cx)
7715 });
7716 let cx = &mut VisualTestContext::from_window(*window, cx);
7717 let editor = window.root(cx).unwrap();
7718 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7719
7720 window
7721 .update(cx, |editor, cx| {
7722 editor.cursor_shape = CursorShape::Block;
7723 editor.change_selections(None, cx, |s| {
7724 s.select_ranges([
7725 Point::new(0, 0)..Point::new(1, 0),
7726 Point::new(3, 2)..Point::new(3, 3),
7727 Point::new(5, 6)..Point::new(6, 0),
7728 ]);
7729 });
7730 })
7731 .unwrap();
7732
7733 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7734 EditorElement::new(&editor, style)
7735 });
7736
7737 assert_eq!(state.selections.len(), 1);
7738 let local_selections = &state.selections[0].1;
7739 assert_eq!(local_selections.len(), 3);
7740 // moves cursor back one line
7741 assert_eq!(
7742 local_selections[0].head,
7743 DisplayPoint::new(DisplayRow(0), 6)
7744 );
7745 assert_eq!(
7746 local_selections[0].range,
7747 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
7748 );
7749
7750 // moves cursor back one column
7751 assert_eq!(
7752 local_selections[1].range,
7753 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
7754 );
7755 assert_eq!(
7756 local_selections[1].head,
7757 DisplayPoint::new(DisplayRow(3), 2)
7758 );
7759
7760 // leaves cursor on the max point
7761 assert_eq!(
7762 local_selections[2].range,
7763 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
7764 );
7765 assert_eq!(
7766 local_selections[2].head,
7767 DisplayPoint::new(DisplayRow(6), 0)
7768 );
7769
7770 // active lines does not include 1 (even though the range of the selection does)
7771 assert_eq!(
7772 state.active_rows.keys().cloned().collect::<Vec<_>>(),
7773 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
7774 );
7775
7776 // multi-buffer support
7777 // in DisplayPoint coordinates, this is what we're dealing with:
7778 // 0: [[file
7779 // 1: header
7780 // 2: section]]
7781 // 3: aaaaaa
7782 // 4: bbbbbb
7783 // 5: cccccc
7784 // 6:
7785 // 7: [[footer]]
7786 // 8: [[header]]
7787 // 9: ffffff
7788 // 10: gggggg
7789 // 11: hhhhhh
7790 // 12:
7791 // 13: [[footer]]
7792 // 14: [[file
7793 // 15: header
7794 // 16: section]]
7795 // 17: bbbbbb
7796 // 18: cccccc
7797 // 19: dddddd
7798 // 20: [[footer]]
7799 let window = cx.add_window(|cx| {
7800 let buffer = MultiBuffer::build_multi(
7801 [
7802 (
7803 &(sample_text(8, 6, 'a') + "\n"),
7804 vec![
7805 Point::new(0, 0)..Point::new(3, 0),
7806 Point::new(4, 0)..Point::new(7, 0),
7807 ],
7808 ),
7809 (
7810 &(sample_text(8, 6, 'a') + "\n"),
7811 vec![Point::new(1, 0)..Point::new(3, 0)],
7812 ),
7813 ],
7814 cx,
7815 );
7816 Editor::new(EditorMode::Full, buffer, None, true, cx)
7817 });
7818 let editor = window.root(cx).unwrap();
7819 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7820 let _state = window.update(cx, |editor, cx| {
7821 editor.cursor_shape = CursorShape::Block;
7822 editor.change_selections(None, cx, |s| {
7823 s.select_display_ranges([
7824 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
7825 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
7826 ]);
7827 });
7828 });
7829
7830 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7831 EditorElement::new(&editor, style)
7832 });
7833 assert_eq!(state.selections.len(), 1);
7834 let local_selections = &state.selections[0].1;
7835 assert_eq!(local_selections.len(), 2);
7836
7837 // moves cursor on excerpt boundary back a line
7838 // and doesn't allow selection to bleed through
7839 assert_eq!(
7840 local_selections[0].range,
7841 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
7842 );
7843 assert_eq!(
7844 local_selections[0].head,
7845 DisplayPoint::new(DisplayRow(6), 0)
7846 );
7847 // moves cursor on buffer boundary back two lines
7848 // and doesn't allow selection to bleed through
7849 assert_eq!(
7850 local_selections[1].range,
7851 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
7852 );
7853 assert_eq!(
7854 local_selections[1].head,
7855 DisplayPoint::new(DisplayRow(12), 0)
7856 );
7857 }
7858
7859 #[gpui::test]
7860 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
7861 init_test(cx, |_| {});
7862
7863 let window = cx.add_window(|cx| {
7864 let buffer = MultiBuffer::build_simple("", cx);
7865 Editor::new(EditorMode::Full, buffer, None, true, cx)
7866 });
7867 let cx = &mut VisualTestContext::from_window(*window, cx);
7868 let editor = window.root(cx).unwrap();
7869 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7870 window
7871 .update(cx, |editor, cx| {
7872 editor.set_placeholder_text("hello", cx);
7873 editor.insert_blocks(
7874 [BlockProperties {
7875 style: BlockStyle::Fixed,
7876 placement: BlockPlacement::Above(Anchor::min()),
7877 height: 3,
7878 render: Arc::new(|cx| div().h(3. * cx.line_height()).into_any()),
7879 priority: 0,
7880 }],
7881 None,
7882 cx,
7883 );
7884
7885 // Blur the editor so that it displays placeholder text.
7886 cx.blur();
7887 })
7888 .unwrap();
7889
7890 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7891 EditorElement::new(&editor, style)
7892 });
7893 assert_eq!(state.position_map.line_layouts.len(), 4);
7894 assert_eq!(state.line_numbers.len(), 1);
7895 assert_eq!(
7896 state
7897 .line_numbers
7898 .get(&MultiBufferRow(0))
7899 .and_then(|(line, _)| line.text.as_str()),
7900 Some("1")
7901 );
7902 }
7903
7904 #[gpui::test]
7905 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
7906 const TAB_SIZE: u32 = 4;
7907
7908 let input_text = "\t \t|\t| a b";
7909 let expected_invisibles = vec![
7910 Invisible::Tab {
7911 line_start_offset: 0,
7912 line_end_offset: TAB_SIZE as usize,
7913 },
7914 Invisible::Whitespace {
7915 line_offset: TAB_SIZE as usize,
7916 },
7917 Invisible::Tab {
7918 line_start_offset: TAB_SIZE as usize + 1,
7919 line_end_offset: TAB_SIZE as usize * 2,
7920 },
7921 Invisible::Tab {
7922 line_start_offset: TAB_SIZE as usize * 2 + 1,
7923 line_end_offset: TAB_SIZE as usize * 3,
7924 },
7925 Invisible::Whitespace {
7926 line_offset: TAB_SIZE as usize * 3 + 1,
7927 },
7928 Invisible::Whitespace {
7929 line_offset: TAB_SIZE as usize * 3 + 3,
7930 },
7931 ];
7932 assert_eq!(
7933 expected_invisibles.len(),
7934 input_text
7935 .chars()
7936 .filter(|initial_char| initial_char.is_whitespace())
7937 .count(),
7938 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7939 );
7940
7941 for show_line_numbers in [true, false] {
7942 init_test(cx, |s| {
7943 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7944 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
7945 });
7946
7947 let actual_invisibles = collect_invisibles_from_new_editor(
7948 cx,
7949 EditorMode::Full,
7950 input_text,
7951 px(500.0),
7952 show_line_numbers,
7953 );
7954
7955 assert_eq!(expected_invisibles, actual_invisibles);
7956 }
7957 }
7958
7959 #[gpui::test]
7960 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
7961 init_test(cx, |s| {
7962 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7963 s.defaults.tab_size = NonZeroU32::new(4);
7964 });
7965
7966 for editor_mode_without_invisibles in [
7967 EditorMode::SingleLine { auto_width: false },
7968 EditorMode::AutoHeight { max_lines: 100 },
7969 ] {
7970 for show_line_numbers in [true, false] {
7971 let invisibles = collect_invisibles_from_new_editor(
7972 cx,
7973 editor_mode_without_invisibles,
7974 "\t\t\t| | a b",
7975 px(500.0),
7976 show_line_numbers,
7977 );
7978 assert!(invisibles.is_empty(),
7979 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
7980 }
7981 }
7982 }
7983
7984 #[gpui::test]
7985 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
7986 let tab_size = 4;
7987 let input_text = "a\tbcd ".repeat(9);
7988 let repeated_invisibles = [
7989 Invisible::Tab {
7990 line_start_offset: 1,
7991 line_end_offset: tab_size as usize,
7992 },
7993 Invisible::Whitespace {
7994 line_offset: tab_size as usize + 3,
7995 },
7996 Invisible::Whitespace {
7997 line_offset: tab_size as usize + 4,
7998 },
7999 Invisible::Whitespace {
8000 line_offset: tab_size as usize + 5,
8001 },
8002 Invisible::Whitespace {
8003 line_offset: tab_size as usize + 6,
8004 },
8005 Invisible::Whitespace {
8006 line_offset: tab_size as usize + 7,
8007 },
8008 ];
8009 let expected_invisibles = std::iter::once(repeated_invisibles)
8010 .cycle()
8011 .take(9)
8012 .flatten()
8013 .collect::<Vec<_>>();
8014 assert_eq!(
8015 expected_invisibles.len(),
8016 input_text
8017 .chars()
8018 .filter(|initial_char| initial_char.is_whitespace())
8019 .count(),
8020 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
8021 );
8022 info!("Expected invisibles: {expected_invisibles:?}");
8023
8024 init_test(cx, |_| {});
8025
8026 // Put the same string with repeating whitespace pattern into editors of various size,
8027 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
8028 let resize_step = 10.0;
8029 let mut editor_width = 200.0;
8030 while editor_width <= 1000.0 {
8031 for show_line_numbers in [true, false] {
8032 update_test_language_settings(cx, |s| {
8033 s.defaults.tab_size = NonZeroU32::new(tab_size);
8034 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
8035 s.defaults.preferred_line_length = Some(editor_width as u32);
8036 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
8037 });
8038
8039 let actual_invisibles = collect_invisibles_from_new_editor(
8040 cx,
8041 EditorMode::Full,
8042 &input_text,
8043 px(editor_width),
8044 show_line_numbers,
8045 );
8046
8047 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
8048 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
8049 let mut i = 0;
8050 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
8051 i = actual_index;
8052 match expected_invisibles.get(i) {
8053 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
8054 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
8055 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
8056 _ => {
8057 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
8058 }
8059 },
8060 None => {
8061 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
8062 }
8063 }
8064 }
8065 let missing_expected_invisibles = &expected_invisibles[i + 1..];
8066 assert!(
8067 missing_expected_invisibles.is_empty(),
8068 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
8069 );
8070
8071 editor_width += resize_step;
8072 }
8073 }
8074 }
8075
8076 fn collect_invisibles_from_new_editor(
8077 cx: &mut TestAppContext,
8078 editor_mode: EditorMode,
8079 input_text: &str,
8080 editor_width: Pixels,
8081 show_line_numbers: bool,
8082 ) -> Vec<Invisible> {
8083 info!(
8084 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
8085 editor_width.0
8086 );
8087 let window = cx.add_window(|cx| {
8088 let buffer = MultiBuffer::build_simple(input_text, cx);
8089 Editor::new(editor_mode, buffer, None, true, cx)
8090 });
8091 let cx = &mut VisualTestContext::from_window(*window, cx);
8092 let editor = window.root(cx).unwrap();
8093
8094 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
8095 window
8096 .update(cx, |editor, cx| {
8097 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
8098 editor.set_wrap_width(Some(editor_width), cx);
8099 editor.set_show_line_numbers(show_line_numbers, cx);
8100 })
8101 .unwrap();
8102 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
8103 EditorElement::new(&editor, style)
8104 });
8105 state
8106 .position_map
8107 .line_layouts
8108 .iter()
8109 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
8110 .cloned()
8111 .collect()
8112 }
8113}